From steel selection and hardness control to surface finishing, Choun Yi delivers OEM/ODM production across a full range of specifications.
From EDC folders to full-size tactical fixed blades, supporting premium steels like M390, D2, and VG-10, with sheath, clip, and packaging integration.
10+ in 1 multi-tools, keychain tools, and pneumatic-nailer components — modular assembly supports highly customizable feature sets.
High-specification metal component manufacturing, including defense hardware and structural components, meeting stringent military and weather-resistance standards. Projects require a signed NDA.
From gifting hardware to entirely new product concepts, our Open-Spec ODM service helps brands build a truly one-of-a-kind lineup.
Steel choice directly affects edge retention, toughness, and corrosion resistance. Below are grades we keep on hand with proven heat-treatment curves.
Not sure which steel fits your application? Submit an inquiry and our engineering team will recommend one.


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