EMS–TRADE Electronics export trading
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Parallel rows of finished server racks and power shelves staged on pallets in a pale dispatch hall

Shenzhen · 24 supplier sites · 5 capability groups · all verified reachable 2026-09-13

The network:
24 supplier sites,
five capability groups.

Twenty-four independently operated Chinese companies. We represent them, we do not own them, and one contract carries your order across all of them.

Send us your spec Open the five capability groups
Network
24
Independently operated supplier sites we represent, not own
Groups
5
Capability groups, split 7 / 3 / 5 / 7 / 2 across A to E
Catalogue
12
Product categories orderable through the network on one contract
List ISO 9001
12/24
Read from the sites' own certification lists — 15 list RoHS, 15 list CE
Reachability
24/24
Checked by HTTP request on 2026-09-13, not assumed

01The asset · what this network is

Twenty-four companies we do not own.

7 / 3 / 5 / 7 / 2Verified 2026-09-1312 categories

Each site is a separate business with its own owners, its own lines and its own published numbers. What we own is the contract, the engineering review and the export.

A data-hall row of closed racks and slim power shelves receding down a wide aisle
Fig. 01Group A alone is seven sites. The largest group, and the one built around a single physical object: the AI rack.
01 We represent, we do not own Twenty-four independent Chinese companies. We own the contract, the engineering read and the export motion.
02 Group split 7 · A, data centre & compute. 3 · B, new energy. 5 · C, electronics manufacturing. 7 · D, consumer & terminal. 2 · E, embedded & other.
03 Reachability Every URL was checked by HTTP request on 13 September 2026 and returned reachable. The date stays printed on this page.
04 Catalogue Twelve product categories are orderable through the network, rendered on the category hub.
A wide production floor seen from a raised viewpoint, with three rows of identical assembly machinery
Fig. 02Group C is five manufacturing sites — the only group whose output is a manufacturing service rather than a finished product.
A cabinet storage unit, a wall-mounted home storage unit and an AC charging pillar staged in one line
Fig. 03Group B is three sites and the smallest group by count — storage, generation modules and charging hardware in one group.
A bright assembly hall seen down a central aisle between two rows of identical SMT machines
Fig. 04Every group page carries its own register — members, families, numbers and the standards each member publishes.
A test rack of finished TFT and OLED display modules in a bright inspection room, every screen lit to the same flat grey field
Fig. 05Group D is seven finished-goods lines — the only group where a buyer orders a product rather than a capability.
Two finished industrial computers on a clean pale bench, one slim fanless enclosure and one rack-mount unit
Fig. 06Group E is two sites, and the only group whose members share no product family at all.
VoltFab TitanWatt VoltBridge AmpRack CapStack RackForge DryLink EMS-ESS EMS-SOLAR ems-charge Saturn PCBA Whale PCBA Uppcba Kingdta EMS Drone AOMAN FUTURE EMS-Display EMS Eyewear Precise3D MODURA EMS-EBIKE EMS Biometric GEOLiNK D.F.S Eastops

02The five capability groups

Five groups, twelve categories, one contract.

Group A 7Group B 3Group C 5Group D 7Group E 2

Each group is a page of its own with its members' real families, numbers and published standards.

03.ARegister · Group A · Data centre & compute

Group A — Data centre & compute infrastructure: 7 sites.

7 of 24 sites3 list ISO 90017 list RoHS6 list CE0 publish none

Seven sites, one object: the AI rack. Power conversion, distribution and continuity, plus the steel and the cooling connections around them.

A data-hall row of closed racks and slim power shelves receding down a wide aisle
Fig. A.1Group A — Data centre & compute infrastructure. 7 independently operated sites.
A rack BBU shelf, a supercapacitor module, a CRPS module, a vertical PDU and a UQD manifold plate staged in one row
Fig. A.2Four layers, four members. Every object in this frame is made by a different Group A site — conversion, distribution, continuity, envelope.
A finished busway run with three tap-off boxes and rotary breaker handles, suspended on brackets A-01

VoltFab

AI data centre power system EMS — rack PDU, BBU, supercapacitor modules, CRPS server PSU and busway built and burn-in tested under one quality system.

Rack PDU BBU Battery Backup Supercapacitor Modules CRPS Server PSU Data Center Busway Integrated Rack Power
142 kW per-rack power ceiling 96% Titanium efficiency 48 h RFQ feedback

Group A · Data centre & compute

A finished CRPS server power supply module with a perforated intake face and a gold edge connector A-02

TitanWatt

Titanium-class CRPS and M-CRPS server power supplies, 550 W to 5.5 kW, engineered toward GPU power and power shelf systems.

CRPS 550–1300 W CRPS 1600–2400 W M-CRPS 3000–5500 W GPU Power Solutions Power Shelf 33 kW roadmap
96% peak efficiency at 50% load 550 W to 5.5 kW ladder MTBF above 250k h at 40 °C

Group A · Data centre & compute

A finished 2U rack battery backup unit with a perforated front grille and heavy DC terminals A-03

VoltBridge

BBU battery backup units that bridge power excursions in milliseconds — rack shelves, in-server modules and ±400 V shelves for GB300-class compute.

Rack BBU Shelf 5.12 kWh (VB-5125) In-server BBU (VB-E3) HV BBU Shelf, 800 VDC ready (VB-H400)
5.12 kWh per 3U shelf <1 ms bridge-to-battery 6,000 cycle class at 25 °C

Group A · Data centre & compute

A finished 1U rack power distribution unit beside a rack-mounted DC power shelf A-04

AmpRack

Intelligent rack PDUs engineered on their own PCBA line — metered, switched and per-outlet monitored power for data centres and critical racks.

Metered PDU Switched PDU Outlet-Metered PDU AI Rack Power
±1% billing-grade metering 36 kW from one 63 A three-phase WYE PDU 100k relay cycles per outlet

Group A · Data centre & compute

A finished 48 V supercapacitor module with four cells in a machined cradle and copper busbar terminals A-05

CapStack

LIC hybrid supercapacitor modules for AI server backup and industrial ride-through — laser-welded, capacity-sorted, test-reported.

48 V AI Rack Backup (RackBridge 48V) PSU / 16 V Pack High-Voltage 125–182 V Low-Voltage 12/24 V Custom & ODM 16–108 V
1–50 ms transient tier 500k+ cycle class at 3.5 V −40 °C cold start

Group A · Data centre & compute

A finished 48U AI server rack with its door open, filled with identical closed 1U units A-06

RackForge

AI racks and cold aisle containment forged on their own sheet metal line — busbar and liquid-cooling provisions pre-installed before the container ships.

Standard Racks 600/800 mm, 42U–52U GPU High-Density 40–132 kW Liquid-Cooling Ready Cold Aisle Containment Busway-Integrated 250–800 A Sheet Metal OEM
132 kW per cabinet 1,600 kg static load at 4× safety factor MOQ 5 units, 30 days FOB

Group A · Data centre & compute

A finished coolant distribution unit with two quick-disconnect hose ports and a copper cold plate A-07

DryLink

OCP-compliant UQD quick disconnects and rack manifolds, machined in-house and helium-tested one by one.

UQDB Blind-Mate Sets UQ04 Hand-Push Sets Rack Manifolds CDU & Custom Manifolds OCP UQD02/04/06/08
±0.01 mm valve-seat tolerance 100% helium leak tested 5,000× mate cycles

Group A · Data centre & compute

03.BRegister · Group B · New energy

Group B — New energy: 3 sites.

3 of 24 sites2 list ISO 90011 list RoHS3 list CE0 publish none

Storage, generation and charging in one group — the only place where a single buyer can assemble a whole behind-the-meter scheme.

A cabinet storage unit, a wall-mounted home storage unit and an AC charging pillar staged in one line
Fig. B.1Group B — New energy. 3 independently operated sites.
A finished new-energy line-up: stackable storage units, a bifacial solar module, an inverter box, an AC wallbox and a DC charger cabinet
Fig. B.2One scheme, three sites. Storage, generation and charging are quoted together so the interfaces become one party's problem.
A finished cabinet battery storage unit beside a wall-mounted home storage unit B-01

EMS-ESS

Wall-mounted, stackable and rack-cabinet LiFePO4 storage from 5.12 to 30.72 kWh, plus GTB grid-tie microinverters from 400 to 1600 W.

Wall-Mounted ESS 5 kW / 10 kW hybrid Stackable ESS 5.12–30.72 kWh Rack-Cabinet ESS 24/48/51.2 V 100 Ah Grid-Tie Microinverters GTB 400–1600 W
10 ms UPS-class switchover 10,000 cycles at 100% DOD 5 + 10 year warranty

Group B · New energy

A finished bifacial dual-glass solar module standing upright beside a wall-mounted home battery cabinet B-02

EMS-SOLAR

Manufacturer-direct N-type TOPCon, HJT and bifacial solar modules from a 2 GW+ factory, with OEM/ODM branding and project supply worldwide.

N-Type TOPCon 430–720 W HJT Premium up to 730 W Bifacial Dual-Glass All-Black BIPV Flexible & Lightweight
2 GW+ annual capacity 26.1% cell efficiency 900+ modules per 40' HC

Group B · New energy

Finished EV charging pillars with connector holsters beside one taller DC fast-charging cabinet B-03

ems-charge

AC 7.4–22 kW wallbox chargers, DC 30–360 kW fast chargers, 96.5% peak-efficiency power modules and an OCPP 2.0.1 platform.

AC Chargers 7.4–22 kW DC Fast Chargers 30–360 kW E-Bike Charging 6–10 bays Charging Modules 30 kW air / 40 kW liquid OCPP 2.0.1 Platform
96.5% module peak efficiency AC 7.4–22 kW, DC 30–360 kW MOQ from 1 unit, 48 h quote

Group B · New energy

03.CRegister · Group C · Electronics manufacturing

Group C — Electronics manufacturing: 5 sites.

5 of 24 sites5 list ISO 90014 list RoHS1 list CE0 publish none

The only group whose deliverable is your design rather than a finished product: fabrication, assembly and complete systems.

A bright assembly hall seen down a central aisle between two rows of identical SMT machines
Fig. C.1Group C — Electronics manufacturing. 5 independently operated sites.
A finished populated circuit board for a power supply on a clean bench, with a digital caliper and a strip of component carrier tape
Fig. C.2Your design is the deliverable. Layer count, acceptance class and inspection method are agreed before the first panel is ordered.
A production panel of identical printed circuit boards held in a white inspection fixture C-01

Saturn PCBA

PCB fabrication and PCBA contract manufacturing from Shenzhen: 1–58 layers, 9 SMT lines, 4–5 DIP lines, 80,000 CPH placement, no MOQ, 60+ countries.

PCB Fabrication 1–58 layers Multilayer & HDI Flex & Rigid-Flex Materials & Finishes SMT Assembly Turnkey & Box Build
In Shenzhen since 1998 1–58 layers 9 SMT + 4–5 DIP lines 80,000 CPH placement

Group C · Electronics manufacturing

A close view down one SMT line, with pick-and-place heads and feeder reels in strict alignment C-02

Whale PCBA

Prototype to mass production — 2–32 layer PCBs, 8 fully automated SMT lines, serving B2B clients across 30+ countries.

PCB Manufacturing SMT Assembly Box Build Assembly Automotive, medical, industrial, IoT & telecom
80,000 m²/month PCB capacity 8 million placements per day 98.7% on-time delivery

Group C · Electronics manufacturing

A wide production floor seen from a raised viewpoint, with three rows of identical assembly machinery C-03

Uppcba

PCB assembly for prototype through mid-volume production, with printing, pick-and-place, reflow, wave, AOI, X-ray and functional test under one roof.

SMT Assembly DIP Assembly Mixed Assembly (SMT + DIP) Box Build DFM Review
20+ years of engineering 10,000+ projects delivered 99.7% first-pass yield

Group C · Electronics manufacturing

An assembly-hall aisle between two rows of identical SMT machines, seen from behind C-04

Kingdta

High-temperature SMD vibration sensors, vibration switches, angle switches and radar modules, with PCB/FPC fabrication and PCBA assembly as a single solution.

Sensor modules: vibration / tilt / optical Radar modules: microwave / BSD / custom PCB fabrication: FPC / multilayer / rigid-flex PCBA services: SMT / DIP / test / coating SMD vibration & angle sensor series
6 SMT lines, 6 DIP lines ±0.03 mm placement accuracy KD1912 rated 5 million cycles

Group C · Electronics manufacturing · Site publishes in Simplified Chinese only.

A finished industrial quadcopter UAV on a pale bench with folded propellers and a gimbal payload pod C-05

EMS Drone

Configurable UAV components, complete systems and engineering support for teams building low-altitude applications.

Flight Control ESC & Power Propulsion Airframe Communication Payload & Kits
18 documents on the published certificate wall 6-step customisation path 4 system architecture layers

Group C · Electronics manufacturing

03.DRegister · Group D · Consumer & terminal

Group D — Consumer & terminal products: 7 sites.

7 of 24 sites2 list ISO 90013 list RoHS3 list CE2 publish none

The only group where you buy a product rather than a capability — it arrives branded, boxed and certified for a market.

A delivery robot, a thin display panel, smart glasses on a riser and an enclosed 3D printer staged in one line
Fig. D.1Group D — Consumer & terminal products. 7 independently operated sites.
A finished large-format autonomous floor scrubber parked in a bright empty hall after cleaning one broad arc of floor
Fig. D.2Finished goods, not kits. Every member in this group runs its own OEM or ODM programme and publishes its own minimum order.
A finished autonomous delivery robot with a closed white body, a sensor band and an open tray shelf D-01

AOMAN FUTURE

Commercial service robots for delivery, cleaning and reception — designed in Shenzhen with authorised manufacturing partners and shipped worldwide.

AOMAN D1 Multi-Scene Delivery Robot AOMAN C1 Autonomous Scrubber AOMAN C2 Pro Cleaning Robot AOMAN G1 Reception & Guidance Robot
40 kg payload (D1) 2,040 m²/h cleaning (C1) 70 L + 50 L tanks (C1)

Group D · Consumer & terminal

An overlapping fan of finished TFT and OLED display modules with blank grey fields and ribbon tails D-02

EMS-Display

Shenzhen manufacturer of LCD, OLED and TFT display modules, 0.96"–15.6", 300–5,000 nits, MOQ 500 pcs, samples in 7–15 days.

TFT-LCD Modules OLED & AMOLED COG Small-Size High-Brightness Touch-Integrated Custom LCM & Interface Kits
500K–1M modules monthly 7–15 day samples, 20–35 day production MOQ as low as 500 pcs

Group D · Consumer & terminal

A finished pair of AI camera glasses seen front-on, with the camera lens set into the temple D-03

EMS Eyewear

AI smart glasses OEM/ODM manufacturer across six product lines — audio, camera, AR display, sports, translation and assistive — with MOQ from 100 pcs.

Smart Audio Glasses (PL-01) AI Camera Glasses (PL-02) AR Display Glasses (PL-03) Sports & Cycling (PL-04) AI Translation (PL-05) Assistive & Safety (PL-06)
MOQ from 100 pcs per SKU 14-day prototyping after spec freeze Class-10,000 clean room

Group D · Consumer & terminal

A finished enclosed professional 3D printer with a closed chamber and a blank control screen D-04

Precise3D

Export-grade consumer 3D printers, MOQ from 100 units per model, CE LVD and RoHS-compliant exports, worldwide shipping.

Pro X1 Professional (CoreXY, enclosed) Creator C1 tier Start S1 entry tier OEM / White Label Distribution programme Education programme
3,500 m² facility 4 assembly lines plus burn-in 500 mm/s max print speed

Group D · Consumer & terminal

A finished modular accommodation module with a glazed end wall, raised on a low steel base frame D-05

MODURA

Precision-engineered modular buildings — apartments, hotels and offices — delivered 50% faster than conventional construction through a verified manufacturing network in East Asia.

Modular Apartments Modular Hotels Modular Offices Standard Design Library Reference Programmes
50% faster: 100 units in 8 months 80% of work in a controlled factory 15–20% average project cost saving

Group D · Consumer & terminal

A finished city e-bike in strict side profile with an integrated downtube battery and a teal chain-guard accent D-06

EMS-EBIKE

Electric two-wheeler OEM/ODM programme manufacturing and exporting electric tricycles, e-bikes, e-scooters and accessories — battery packs, smart chargers, hub motors and controllers.

E-Tricycles, 150–500 L cargo boxes E-Bikes: city, fat-tire, folding, cargo E-Scooters: city, foldable, off-road 36–72 V packs, chargers, hub motors
250–3,000 W motor power 40–200 km range per charge 72 V maximum battery system

Group D · Consumer & terminal

A finished wall-mounted biometric access terminal with a fingerprint pad, a camera window and a blank display D-07

EMS Biometric

Biometric chips — fingerprint SoCs, QR decode chips, face algorithm processors — plus fingerprint and face modules, 2D barcode scan engines and access-control terminals for B2B OEM/ODM.

Chips (AS Series) Fingerprint Modules Face Modules Barcode Scanners Access Control & Attendance Terminals Solutions: door-lock, channel, cloud
400+ registered patents 300 million+ chips shipped since 2005 150+ catalogued models

Group D · Consumer & terminal

03.ERegister · Group E · Embedded & other

Group E — Embedded & other: 2 sites.

2 of 24 sites0 list ISO 90010 list RoHS2 list CE0 publish none

Two long-established Shenzhen manufacturers that fit none of the four thematic groups: a computing platform and a retail-fixture line.

Three finished fanless industrial computers in a row with closed enclosures
Fig. E.1Group E — Embedded & other. 2 independently operated sites.
A plain retail shelving unit fitted with a continuous row of e-ink electronic shelf labels and one coiled anti-theft display cable
Fig. E.2Two businesses in one group. A computing platform on one side, retail fixtures on the other — no shared product family at all.
Three finished fanless industrial computers in a row with closed enclosures and no boards visible E-01

GEOLiNK

Industrial motherboards in six form factors built for wide temperature and wide-voltage DC input, with OEM/ODM customisation.

2.5-inch SBC 3.5-inch SBC 3.5-inch Wide NANO-ITX Mini-ITX NUC
28 motherboard models 6 form factors −20/+60 °C operating range 9–36 V DC input

Group E · Embedded & other

Finished retail security products: an e-ink shelf label, an anti-theft gate pedestal and a barcode scanner E-02

D.F.S Eastops

Retail display security and electronic shelf labels — anti-theft display cables, security power adapters, cabinet locks and Bluetooth e-ink price tags.

Electronic Shelf Labels 2.1"–7.5" e-ink Anti-Theft Display Cables Security Power Adapters Electronic Locks Hanging & Other Security
29 models 13 international certifications 10,000 m² factory

Group E · Embedded & other

04Trust layer · certification, measured

What the sites publish, counted.

12 / 24 ISO 900115 / 24 RoHS15 / 24 CE2 publish none

Of the 24 partner sites, 12 list ISO 9001 among their certifications, 15 list RoHS and 15 list CE; two list none. That figure was arrived at by reading each site's own published certification list on 13 September 2026. The trading company holds no citable certificate of its own.

ISO 9001
12/24
RoHS
15/24
CE
15/24
Ticks run in register order, Group A first Read from each site, 2026-09-13 No holder name or certificate number anywhere on this site
Attributed, never claimedA code is printed only where that site publishes it. Nothing here is presented as a certificate the trading company holds.
Two sites publish nothingTheir cards render published proof instead — patents, model counts, quality gates — never a badge they did not publish.
Every figure is the site's ownNo acceptance class, yield or throughput on this site is restated as ours; each one names the site that publishes it.
An engineering bench under an inspection lamp with a finished board assembly, a magnifier arm and sample connectors
Fig. 16A code is a starting point, not an answer. Scope decides what it covers, so we read the scope sentence too.
A close view down one SMT line, with pick-and-place heads and feeder reels in strict alignment
Fig. 17Where the process claim lives. Acceptance class and inspection method are agreed in writing before a panel is ordered.
Digital calipers closed around a machined aluminium housing beside a blank inspection checklist and a sealed sample bag
Fig. 18Measured, not asserted. Pre-shipment inspection is where a published number is checked against a real unit.
Three finished fanless industrial computers in a row with closed enclosures and no boards visible
Fig. 19Two groups publish no ISO 9001 at all — Group E on both members. The count says so rather than rounding up.
Finished retail security products: an e-ink shelf label, an anti-theft gate pedestal and a barcode scanner
Fig. 20A published code still has a scope. FCC Part 15 governs interference; it says nothing about electrical safety.

05Register · published standards, site by site

Every standard code, on the card of the site that publishes it.

24 site cardsStandards onlyNo holders, no numbers

Read down the register: each card carries the standards that site lists, and the two cards with no certification say so in the first row.

A finished busway run with three tap-off boxes and rotary breaker handles, suspended on brackets A-01

VoltFab

RoHS CE
UL 62368-1 UL 1973 UL 9540A UL 857 IEC 61439-6 80 PLUS Titanium CE UKCA RoHS UN38.3
A finished CRPS server power supply module with a perforated intake face and a gold edge connector A-02

TitanWatt

RoHS CE
IEC/UL/EN 62368-1 with CB scheme CE UKCA FCC Part 15 Subpart B RoHS REACH
A finished 2U rack battery backup unit with a perforated front grille and heavy DC terminals A-03

VoltBridge

RoHS CE
UN 38.3 tested IEC 62619 CE + EU 2023/1542 RoHS REACH UL 1973 / UL 9540A path via accredited labs
A finished 1U rack power distribution unit beside a rack-mounted DC power shelf A-04

AmpRack

ISO 9001 RoHS CE
UL 62368-1 IEC 60309 CE UKCA RoHS/REACH FCC Part 15 A ISO 9001 IEC 62053-21
A finished 48 V supercapacitor module with four cells in a machined cradle and copper busbar terminals A-05

CapStack

RoHS CE
UL 810A cell route IEC 62391 methods RoHS / REACH / WEEE CE DoC UN 3499 shipping docs
A finished 48U AI server rack with its door open, filled with identical closed 1U units A-06

RackForge

ISO 9001 RoHS CE
ISO 9001 CE RoHS EIA-310-E IEC 60297 GR-63 Zone 4 optional
A finished coolant distribution unit with two quick-disconnect hose ports and a copper cold plate A-07

DryLink

ISO 9001 RoHS
OCP UQD interface compliance ISO 9001 RoHS REACH ISO 4406 cleanliness
A finished cabinet battery storage unit beside a wall-mounted home storage unit B-08

EMS-ESS

CE
CE (LVD/EMC) IEC 62109-1 & -2 UN38.3 VDE-AR-N 4105 G99 EN 50549
A finished bifacial dual-glass solar module standing upright beside a wall-mounted home battery cabinet B-09

EMS-SOLAR

ISO 9001 CE
IEC 61215 IEC 61730 CE UL 61730 ISO 9001 ISO 14001 IEC 62941
Finished EV charging pillars with connector holsters beside one taller DC fast-charging cabinet B-10

ems-charge

ISO 9001 RoHS CE
CE UL 2594 UL 2202 UL 2231 IEC 61851-1 ISO 15118 OCPP 2.0.1 ISO 9001 IATF 16949 TÜV RoHS FCC
A production panel of identical printed circuit boards held in a white inspection fixture C-11

Saturn PCBA

ISO 9001 RoHS
ISO 9001:2015 UL 796 RoHS REACH IPC-A-610 Class 2 & 3 J-STD-001 IPC-A-600 / IPC-6012
A close view down one SMT line, with pick-and-place heads and feeder reels in strict alignment C-12

Whale PCBA

ISO 9001 RoHS
ISO 9001:2015 ISO 14001:2015 IATF 16949:2016 ISO 13485:2016 UL Certified RoHS 3.0 REACH IPC-A-610 Class 3
A wide production floor seen from a raised viewpoint, with three rows of identical assembly machinery C-13

Uppcba

ISO 9001 RoHS
ISO 9001:2015 ISO 13485 IPC-A-610 Class 3 UL Certified RoHS
A finished industrial quadcopter UAV on a pale bench with folded propellers and a gimbal payload pod C-15

EMS Drone

ISO 9001 CE
ISO 9001:2015 (UKAS-accredited) CE DoC (EMC 2014/30/EU) FCC Part 15 Subpart B (VoC)
A finished autonomous delivery robot with a closed white body, a sensor band and an open tray shelf D-16

AOMAN FUTURE

No certification published

Publishes no certification. Rendered on proof instead: six quality gates per unit and a 48-hour aging run on every robot.

An overlapping fan of finished TFT and OLED display modules with blank grey fields and ribbon tails D-17

EMS-Display

ISO 9001 RoHS CE
ISO 9001 IATF 16949 ISO 13485 ISO 14001 CE · FCC RoHS · REACH UL Conflict-Free
A finished pair of AI camera glasses seen front-on, with the camera lens set into the temple D-18

EMS Eyewear

RoHS CE
CE (RED/EMC/LVD/RoHS) FCC (RF & EMC) RoHS REACH BQB Bluetooth UN38.3 ANSI Z87.1 EN166
A finished enclosed professional 3D printer with a closed chamber and a blank control screen D-19

Precise3D

RoHS CE
CE (LVD) per EN 62368-1 RoHS (EU 2015/863) CE (EMC) per EN 55032/55035
A finished modular accommodation module with a glazed end wall, raised on a low steel base frame D-20

MODURA

ISO 9001
ISO 9001:2015 ISO 14001:2015 ISO 45001:2018 ICC-ES evaluation report light-steel framing, IBC/IRC 2021 SGS CPR certificate Intertek WH fire test to ISO 3008-1
A finished city e-bike in strict side profile with an integrated downtube battery and a teal chain-guard accent D-21

EMS-EBIKE

No quality-system standard listed
EN 15194 EN 50604 UL 2849 (US battery) UL 2271 (US cells) eMark L1e (EU type-approval) UN 38.3
A finished wall-mounted biometric access terminal with a fingerprint pad, a camera window and a blank display D-22

EMS Biometric

No certification published

Publishes no certification. Rendered on proof instead: 400+ registered patents and software works, and 300 million+ biometric chips shipped since 2005.

06Mechanism · how a site gets on this page

Six anchors, seven signals, one printed test date.

Re-tested by HTTP requestTest date printedA failed site leaves the roster
A1 Registered entity The legal entity that exists on a business registration, checked before anything else.
A2 Contracting seller The name that signs the sales contract — and it has to be the same company.
A3 Bank payee The account the money reaches. A change mid-order is a stop signal, not an inconvenience.
A4 Production site The address where the product is actually made, not a sales office address.
A5 Process route Whether the product line has a process logic that explains how the thing gets built.
A6 Shipper Who appears on the export documents. It closes the chain from entity to container.
Seven mismatch signals we screen for
The name does not match Payment instructions change mid-order The site identity is vague No process logic in the product line Technical questions go unanswered Imagery cannot be located The sample story differs from the production story
A technical drawing flat on a pale bench with digital calipers, a drafting triangle and sample parts
Fig. 21Identity chain first. Six anchors are checked before a site is published, and re-checked rather than assumed.
An export loading bay with an open container onto a pale apron, unlabelled cartons on pallets and blank paperwork on top
Fig. 22Reachability is re-tested. All 24 URLs returned HTTP 200 on 13 September 2026; the date is part of the page.
Two pairs of hands over a technical drawing, one pointing at a dimension tick with a pen
Fig. 23A site that fails re-verification comes off the roster and the counts on this page change with it.
A wide empty industrial service corridor in one-point perspective with a painted walkway line running to a closed shutter
Fig. 24Then go and stand in it. A visit is how a process route stops being a claim and becomes something you have seen.
Our own SMT line seen down the line, with a pick-and-place machine, a reflow oven and boards on the conveyor
Fig. 25Our own line is the backstop — the same engineers read a partner's answer and tell you whether it holds.

07Trust layer · our own line

A separate strip at the foot of the register.

Not counted among the 24Never namedEngineering backstop
Our own SMT line seen down the line, with a pick-and-place machine, a reflow oven and boards on the conveyor
Fig. 10Our own PCB & PCBA factory — 45,000 m² in Bao'an, Shenzhen, 500+ people, 9 SMT and 5 DIP lines, up to 58 layers.

Our own PCB & PCBA factory.
Held outside the 24.

It is not a roster row and it is never added to the 24. Its role is the engineering backstop beneath every site on this page.

It carries none of the partner numbers and none of the partner certificates.

45,000 m² Bao'an, Shenzhen 500+ people 9 SMT lines 5 DIP lines Up to 58 layers
Our own line How we check a claim
A production panel of identical printed circuit boards held in a white inspection fixture
Fig. 11Every product has a board inside. The engineers who assess our own work are the ones who read a partner's answer.
A close macro view of an impedance-controlled board cut edge under laboratory light, held in a plain black fixture
Fig. 12Same baseline, separate books. The network's published envelopes are not evidence for our own line, and we do not mix them.

08Questions buyers ask about the network

The five a buyer asks first.

24 sites5 groupsone contract
Q1 Are these sites yours? No. Twenty-four independently operated companies. What we own is the contract, the engineering review and the export motion.
Q2 Can I buy from a site directly? Yes. Every card in this register carries that site's own URL. What you cannot get that way is one accountable party across three sites.
Q3 What if a site publishes no certificate? Two of the 24 do. They are presented on measurable proof instead — patents, model counts, quality gates — never on a badge they did not publish.
Q4 How current is this list? Every URL was HTTP-verified reachable on 13 September 2026. The date and the result are printed on this page, not implied.
Q5 Which group should I start with? Data centre and AI buyers start at Group A. Anything with a battery, a module or a charger starts at Group B.
Q6 Is your own factory one of the 24? No. Our own PCB & PCBA factory is held outside the count and carries none of the partner numbers.
A project review laid out on a clean pale worktable with an open drawing, a board sample and a sealed sample bag
Fig. 26Start anywhere. The register names the site; we carry the contract, the assessment and the documents.
A container terminal yard at first light with parallel rows of identical containers receding into pale haze
Fig. 27One export motion. One set of documents and one inspection schedule, however many sites the order touches.
A blank unmarked form on a clipboard with a pen, with abstract ruled lines and empty tick boxes
Fig. 28What comes back. A written technical assessment from an engineer, naming which sites fit and what it takes.
A pre-shipment inspection on a warehouse floor with open cartons, sampled power supply units and a blank checklist
Fig. 29Checked before it ships. One inspection schedule covers every site the order touches.
A single technical drawing sheet with a pen, dividers and one teal sticky tab, viewed from directly above
Fig. 30One contract. Twenty-four supplier sites behind it, and one party named on the document that matters.
Related Twelve product categories Quality & verification Sourcing & matching Export execution Send us your spec

09Start

Send us your spec.

Name the category, or attach the drawing. We will say which of the 24 sites fits, and what it takes.

Recorded. An engineer will reply.

Written technical assessment, from eric@dfshk.cn.

Book a factory visit eric@dfshk.cn · +86 152 3512 7440