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Longwin Custom Supplies Ltd. is an ISO 9001:2015 certified trade agency located in the hub of an industrial zone in Tainan City, Taiwan. Longwin Custom Supplies Ltd. was built to be a bridge between overseas buyers and Taiwanese manufacturers. We dedicate ourselves to providing customers with a total solution by integrating various processes into a precise manufacturing operation.



Feasibility Study

To achieve smooth and economical recurring runs, we examine every detail on both parts and molds, and will always provide our customers with redesign solutions and alternatives. 

Sample for Approval

Getting the customer’s approval is the last step before construction. Thus, we provide samples or materials in various formats so the customer can feel confident about final sign off. 

Transparent Process

We communicate often and clearly with our customers to ensure all parties are on the same page every step of the way. We also welcome visits to our manufacturing sites. Our doors are always open.

Product Warranty

A material certificate accompanies mold and parts shipping, and we also guarantee mold shots according to a selected steel grade.




  • Will Longwin or a vendor manage my project?
    Longwin will lead the project and be fully responsible to the customer.
  • How do we start an inquiry?
    Please provide us with a material plan, prints, 3D models or any other detailed information you may have.
  • What if I have only a sample or an idea?
    You may send us a sample for reverse engineering or use our design service to bring your idea to life. Our engineering team will guide you to a feasible plan.
  • Are we allowed to visit the vendors?
    Yes. We welcome customers to attend mold trials and to walk into our manufacturing sites.
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