Four engineering services
Engineering Expertise. Manufacturing Execution.
Support from DFM and tooling through samples, supplier coordination, engineering changes, and manufacturing follow-through in China.
SourceBridge provides engineering and execution support. Tooling, molding, assembly, and other manufacturing operations are performed by owner-confirmed or mutually approved suppliers. SourceBridge does not claim factory ownership or unverified production capacity.

Injection mold engineering
Mold Design & Manufacturing
For teams moving an injection-molded component from product data through tooling, mold trials, modifications, and delivery.
- Project scenario
- A new or revised plastic component requires DFM review, injection mold design, tooling-build coordination, and mold-trial follow-up in China.
- Work delivered
- DFM review, mold-design development or coordination, tooling-drawing support, supplier coordination, build tracking, T0/T1 trial review, engineering changes, and tooling-modification follow-up.
- Tangible output
- DFM findings, mold-design files or review records within scope, tooling issue lists, trial reports, modification actions, and delivery documentation.
- Boundary
- Tooling manufacture and mold trials are performed by owner-confirmed or mutually approved suppliers. SourceBridge provides the agreed engineering and execution support and does not claim factory ownership.

Plastic parts and assembly
Plastic Parts Production & Assembly
For plastic components and subassemblies requiring DFM, material and CMF alignment, injection-molding coordination, sample follow-up, and defined assembly support.
- Project scenario
- A plastic component or subassembly requires China-side production coordination after design intent, material requirements, finish requirements, and commercial responsibilities are defined.
- Work delivered
- DFM, Color, Material & Finish (CMF) coordination, supplier communication, injection-molding and sample follow-up, issue resolution, and assembly-scope coordination.
- Tangible output
- DFM records, agreed material and finish records, sample status, open-issue lists, and agreed inspection or assembly documentation.
- Boundary
- Injection molding and assembly are performed by owner-confirmed or mutually approved suppliers. No machine-count or production-capacity claim is made.

Hardware development
Hardware Product Development & Manufacturing
For physical products requiring mechanical design, prototyping coordination, DFM, assembly review, and a controlled handoff to manufacturing.
- Project scenario
- A concept or existing design requires mechanical development, prototype or sample iterations, supplier coordination, and a defined route to manufacturing.
- Work delivered
- Mechanical design or review, packaging and assembly coordination, DFM, prototype and sample follow-up, engineering change management, supplier coordination, and issue resolution within the agreed scope.
- Tangible output
- Requirements, mechanical-design files or review records, prototype and sample feedback, change and issue logs, and manufacturing-handoff documentation.
- Boundary
- Electronics, firmware, certification, validation, manufacturing, and assembly responsibilities are defined for each project. SourceBridge does not claim work outside the agreed scope or unverified product performance.

China-side execution
China-Side Technical Project Support
For international hardware teams working with—or selecting—suppliers in China and needing a technical representative close to execution.
- Project scenario
- A team needs China-side technical communication, drawing and revision control, sample or trial review, progress visibility, and structured issue closure.
- Work delivered
- Requirement clarification, bilingual engineering coordination, supplier follow-up, drawing and revision checks, agreed factory visits, sample or trial review, action tracking, and verification follow-up.
- Tangible output
- Meeting records, action and issue logs, annotated technical feedback, progress reports, sample or trial findings, and closure or verification records.
- Boundary
- Customers may retain their existing Chinese suppliers. Support does not require transferring a purchase order or changing the manufacturing party.
