Koosei Precision is an engineer-founded manufacturer of custom mold inserts, core pins, jig & fixture parts and FA components

About Us

A precision workshop founded by engineers

Koosei Precision Co., Ltd. is a custom precision machining workshop in Chang'an, Dongguan — the heart of China's mold manufacturing industry for over three decades. We are founded and managed by engineers, not salespeople: every drawing is reviewed for manufacturability, dimensional accuracy and process optimization before you receive a quotation.

For more than 10 years we have supplied mold inserts, core pins, punches, jig & fixture parts and FA components to customers in Japan, Germany, the United States, Canada, the United Kingdom, France and Italy — markets with the strictest quality expectations.

What we make

  • Mold & die components — inserts, cores & cavities, side cores, sliders, core pins
  • Consumable stamping parts — Teikin character punches, cutting & stripping blades
  • Jig & fixture parts — guide pins, locating blocks, wear plates
  • FA & automation components — positioning blocks, thin-wall plates, custom machine parts

Equipment that holds micron-level accuracy

MachineQtyAccuracyMax workpiece
Mitsubishi sinker EDM3±0.002 mm800 × 600 × 350 mm
Seibu wire-cut EDM3±0.001 mmtaper up to ±15°
NC surface grinder6flatness within 1 μmRa 0.05 μm

How we work with overseas manufacturers

Most of our customers are small and mid-sized mold makers, injection molders, stamping shops and precision machinery builders who outsource part of their machining. They stay with us for three reasons:

  • Drawings stay confidential. NDA available on request; files are stored on access-controlled servers and used for quotation and production only.
  • One-piece prototypes are welcome. Try us with the part that matters — at the tolerance you actually need.
  • Reorders match the first batch. Replacement punches, blades and blocks arrive with the same dimensions — no re-adjustment of your tooling.

Send your drawing (PDF / DWG / STEP) to info@koosei-mould.com — quotation within 24 hours on business days. WhatsApp: +86 184 0200 7758 (Mr. Zhou).

About Us

Contact Us

    Name: Mr.zhou

    Mobile: +8618402007758

    E-mail: info@koosei-mould.com

    WeChat: +8618402007758

    Whatsapp: +8618402007758

    Add: No.123 Xinmin road, chang 'an town, dongguan city, guangdong province, China

    whatsapp: +8618402007758 info@koosei-mould.com
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