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Contract manufacturing / box build

Custom manufacturers that make parts and products to your design — with who owns them, how much English you'll get, and a link back to the source.
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Native-English project managerStartup-friendly: manages prototype → production13 companies

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Agilian Technology

Foreign-owned

Foreign-owned, foreign-managed factory (Sofeast group) with English-speaking staff in every department

Dongguan · Chang'an
Makes in-housePrototypesLow volumeMass production
Contract manufacturing / box buildPCB assembly (SMT/PCBA)Injection moldingSilicone & LSR molding
Native-English project managerSource ↗

NOA Labs

Foreign-managed

German-founded (2012) design-to-production firm with Berlin and Shenzhen offices

Shenzhen · Bao'an
PrototypesLow volumeMass production
Rapid prototyping (multi-process)PCB assembly (SMT/PCBA)Contract manufacturing / box buildProduct design & engineering
English-speaking salesSource ↗

SI Electronics

新一电子
Chinese

SMT plus chip-on-board (COB) wire bonding under one roof

Dongguan · Dongguan (other town)
Makes in-housePrototypesLow volumeMass production
PCB assembly (SMT/PCBA)Contract manufacturing / box buildElectronic component sourcingPCB / PCBA shop
Chinese onlySource ↗

Shuoheng Technology (iPCBA)

硕恒科技
Chinese

Samples and small orders with fast quotes

Shenzhen · Bao'an
Makes in-housePrototypesLow volume
PCB assembly (SMT/PCBA)PCB fabricationProduct design & engineeringContract manufacturing / box build
English-speaking salesSource ↗

Vexos

Foreign-owned

North American EMS with a Dongguan plant opened in 2025

Dongguan · Dongguan (other town)
Makes in-houseLow volumeMass production
Contract manufacturing / box buildPCB assembly (SMT/PCBA)Contract manufacturerFactory
English-speaking salesSource ↗

MediConcepts

Medical-device contract design and manufacturing since 2002

Hong Kong
Makes in-houseLow volumeMass production
Contract manufacturing / box buildInjection moldingSilicone & LSR moldingProduct design & engineering
English-speaking salesSource ↗

Cicor Dongguan

Foreign-owned

Swiss-listed Cicor Group's EMS plant in Dongguan

Dongguan · Dongguan (other town)
Makes in-house
Contract manufacturing / box buildPCB assembly (SMT/PCBA)Contract manufacturerFactory
English-speaking salesSource ↗

SCSPCBA

AI instant quote for PCB, PCBA, BOM and box build

Shenzhen · Bao'an
Makes in-housePrototypesLow volumeMass production
PCB assembly (SMT/PCBA)PCB fabricationElectronic component sourcingContract manufacturing / box build
English online orderingSource ↗

POE

No-MOQ turnkey PCBA with a startup program

Shenzhen · Bao'an
Makes in-housePrototypesLow volumeMass production
PCB assembly (SMT/PCBA)PCB fabricationElectronic component sourcingCables & wire harnesses
English-speaking salesSource ↗

PCBONLINE

Advanced boards: up to 64 layers, HDI, rigid-flex, RF and ceramic

Shenzhen · Bao'an
Makes in-housePrototypesLow volumeMass production
PCB fabricationPCB assembly (SMT/PCBA)Electronic component sourcingContract manufacturing / box build
English-speaking salesSource ↗

ChinaPCBOne

Chinese

Sister PCB and PCBA factories in the same Fuyong industrial park

Shenzhen · Bao'an
Makes in-housePrototypesLow volume
PCB fabricationPCB assembly (SMT/PCBA)Electronic component sourcingContract manufacturing / box build
English-speaking salesSource ↗

Sofeast

Foreign-managed

Founded by quality engineer Renaud Anjoran, author of QualityInspection.org

Hong Kong
In-house + partnersPrototypesLow volumeMass production
Contract manufacturing / box buildProduct design & engineeringTesting & certificationQuality inspection & audits
English-speaking salesSource ↗

Peakingtech

English-speaking NPI partner for startups, builds from 5 units

Shenzhen · Longhua
Partner networkPrototypesLow volumeMass production
PCB assembly (SMT/PCBA)Injection moldingSheet metal fabricationCNC machining
English-speaking salesSource ↗

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