Engineer reviewing production data on a laptop on a machine shop floor

Custom plastic injection molding manufacturer in Taiwan: your drawing, sample or existing mold, molded here since 1989.

Custom Injection Molding · Taichung, Taiwan

GSUN Plastic runs its own injection molding factory in Taichung. We take a part from drawing review or a physical sample through tooling, qualification and production, and we tell you before quoting whether your part fits our machines.

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1989

Injection molding since 1989 · GSUN Plastic Co., Ltd. established 2000

ISO 9001:2015

Certified since 2020 · GIC certificate 26-A-0725

50–210 t

Clamping range · 8 machines, all with take-out robots

< 1,000 pcs

Small orders accepted

Three ways buyers start with us

Tell us which situation you are in

Each route needs different information from you. Choosing the right one on the enquiry form shortens the first reply from a series of questions to a direct technical answer.

A · New part, new tooling

You have a 3D file or 2D drawing and no mold yet. We review molding feasibility first: wall thickness, draft, gate position, shrinkage and which of our machines the tool would sit on.

Route A on the enquiry form

B · Existing mold transfer

Your mold is with another molder or in storage. We ask for mold dimensions, shot count and last production date, then quote inspection and a trial shot before committing to production.

Route B on the enquiry form

C · Sample only, no drawing

You have a finished part and no data. We measure it, identify the resin family and rebuild the geometry. Material identification is a comparison, not a full formulation report.

Route C on the enquiry form

Applications

Parts we have molded

These are application categories, not a catalogue. GSUN does not sell standard models off a shelf; every item shown was produced to a customer drawing, sample or mold.