Prior professional experience across injection mold engineering, plastic materials and CMF, mechanical product development, and EV charging hardware.
These examples document Han Dong’s prior professional work. They are not SourceBridge client projects and do not imply former-employer, customer, or end-brand endorsement.
Owner-supplied mold photograph · illustrative career context
Project context: Documented prior-employer work on a refrigerator air-duct cover and its injection mold.
Engineering scope and key contributions: product and manufacturability review, 3D injection mold design, manufacturing drawings, CNC and mold-assembly follow-up, and T0/T1 mold-trial issue resolution.
Evidence boundary: the supplied photograph is illustrative and is not claimed as the exact tool. No production-volume, quality-result, or customer-endorsement claim is made.
Plastic Materials & CMF Development
Experience connecting materials, Color, Material & Finish (CMF), product structure, DFM, tooling, and assembly.
Qingdao New Materials · 2018–2023
In-Mold Decorative Components & CMF Development
Owner-supplied molded-part photograph · illustrative material and structure context
Engineering scope and key contributions: appearance, material, finish, process, tooling, sample, and production-launch coordination for in-mold decorative applications.
Project context: prior-employer work. The supplied photograph is illustrative, is not attributed to an unnamed customer, and is not presented as a SourceBridge delivery.
Collaborative development
PET Refrigerator Interior Components — Collaborative Material Development
Engineering scope and key contributions: collaborative GPPS-to-PET material trials, structural optimization, prototype tooling, sample review, pilot-build confirmation, and production follow-up.
Project context: collaborative work; no sole-inventor, commercial-success, or validated-performance claim is made.
Mechanical Products & EV Charging Hardware
Experience in mechanical product development, assembly coordination, DC charging connectors, and related cooling systems.
Qingdao New Materials · 2018–2023
XCOOK Smart Food-Storage Product — Mechanical Development
Engineering scope and key contributions: product appearance, mechanical structure, surface-finish coordination, packaging, DFM and tooling review, and mechanical assembly coordination.
Project context: no independent electronics, PCB design, firmware, certification, or market-performance claim is made.
Zhixingyuan New Energy · Work documented from June 2024
DC Charging Connector & Cooling-System Development
Project context: documented former-employer work involving 125A/250A connectors identified in the source material as naturally cooled, 300A/400A independent-air-duct connectors, liquid-cooled connectors, and a related cooling unit. Engineering scope and key contributions: mechanical structure, thermal considerations, interfaces, sample follow-up, and engineering-validation coordination within the documented role.
Evidence boundary: brochure renderings are not SourceBridge products and do not establish certification, validated performance, production results, or customer deployment. No current-employment claim is made.
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