Osaka Heat Treatment Co., Ltd.

■Various springs and mainsprings Our thin springs and mainsprings are used in a variety of fields including automobiles, electr...

• Springs

• Spiral Springs

■Kopling ・“Constant load, constant torque” Copling is a new era spring developed by our company. ・The fundamental difference ...

■Career ・The new life of our company is also alive in electronics technology, which is attracting a lot of attention in this e...

■Hardened steel strip, polished special steel strip manufacturing process We are able to produce high-quality hardened steel st...

■Knives ・Knives made from our sophisticated hardened steel strips have excellent sharpness and durability, and can be used in ...