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
| Machine | Qty | Accuracy | Max workpiece |
| Mitsubishi sinker EDM | 3 | ±0.002 mm | 800 × 600 × 350 mm |
| Seibu wire-cut EDM | 3 | ±0.001 mm | taper up to ±15° |
| NC surface grinder | 6 | flatness within 1 μm | Ra 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
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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
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