From Engineering Design to Manufacturing Execution.

SourceBridge Engineering helps hardware teams worldwide develop physical products, engineer injection molds, coordinate plastic-part production, and manage technical execution with manufacturing partners in China.

Concept illustration of precision tooling and CNC manufacturing Tooling engineering Concept illustration
Owner-supplied photograph of product panels, plastic components, and CMF samples with third-party marks Plastic parts & CMF Owner-supplied reference
Former-employer rendering of a DC charging connector Charging hardware Former-employer material
Owner-supplied engineering visuals · mold image is conceptual · product collection includes third-party marks belonging to their respective owners · charging connector is former-employer material

Four focused services for product development and manufacturing execution.

Scope, responsibilities, schedule, deliverables, and manufacturing responsibility are defined before technical work begins.

Open injection mold showing tooling components
Owner-supplied tooling image

Mold Design & Manufacturing

DFM review, injection mold design, supplier tooling coordination, mold trials, tooling modifications, and delivery follow-through.

Two molded plastic housings showing internal ribs and mounting features
Owner-supplied molded-part image

Plastic Parts Production & Assembly

DFM, injection molding coordination, Color, Material & Finish (CMF) alignment, sample follow-up, and defined assembly support.

Air-cooled DC charging connector product rendering from a former-employer brochure
Brochure rendering · personal career context

Hardware Product Development & Manufacturing

Mechanical design, prototyping coordination, supplier alignment, engineering change management, and manufacturing handoff within the agreed scope.

Collage of production equipment inside a partner manufacturing facility
Partner-factory promotional reference · not evidence of a SourceBridge-owned factory or specific engagement

China-Side Technical Project Support

Supplier coordination, drawing and revision control, agreed factory-visit support, action tracking, issue resolution and verification, and written reporting.

Han Dong

Product Development & Engineering Project Lead

Han works across product definition, mechanical design, DFM, tooling, supplier coordination, mold trials, engineering changes, and manufacturing follow-through. His documented prior experience includes appliance tooling, materials and CMF development, smart hardware, and EV charging products.

Review Han’s experience and selected products
Han Dong outdoors beside a lakeside railing
Han Dong · Product Development & Engineering Project Lead
2013–2018

Haier Group

Mold engineering for appliance components, including documented work on a refrigerator air-duct cover and its injection mold.

2018–2023

Qingdao New Materials

In-mold decorative components, PET refrigerator interior parts, CMF development, tooling and production-launch support, and XCOOK mechanical development.

Work documented from 2024

Zhixingyuan New Energy

Documented prior work on DC charging connectors and associated cooling-system engineering.

Prior professional experience—not SourceBridge client work, former-employer endorsement, or a claim of current employment.

Discuss a Product Engineering Project.

Email a brief, non-confidential overview of the product, current stage, target deliverables, schedule, and China-side support needed.

sourcebridge.eng@outlook.com

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