For over 70 years, Koyo High Precision has built a strong reputation for delivering customer-specific, high-precision machined metal parts, earning the trust of high-tech industries around the world.
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Mass Production Capacity
- We handle small-volume orders starting from just one piece while also excelling in high-precision mass production of over a million pieces. Each order is treated with the utmost care and quality assurance it deserves.
- Our manufacturing capabilities include 30 machining centers and over 200 CNC machines, supporting a production capacity of more than 1,000,000 pieces per month.
Expertise in Difficult-to-cut Materials
We specialize in machining difficult-to-cut materials, including:
Stainless steel, Brass. Aluminum, Tungsten (W), MAT21,
Molybdenum (Mo), Tantalum (Ta), Niobium (Nb), Hastelloy, Inconel,
Permalloy, Alloy 42, Kovar, Nickel, Silver, Copper, Platinum
… and many more
… and many more


High-Precision Machining Capabilities
We achieve tight tolerances, such as:
- ±0.003mm (±0.00011″) on Tungsten
- Manufacturing nozzles with outer diameter 0.2mm (0.0079″) and inner diameter 0.15mm (0.006″) in Platinum
- Drilling φ0.2mm (0.0079″) through holes up to 40mm (1.57″) in Hastelloy