TENG YAO - Constant Torque Spring

Teng Yao is the world largest power springs, constant force springs & torque springs manufacturer .We also accept any kinds of custom springs production. ... [定扭力彈簧] / [客製化定扭力彈簧] 定扭力彈簧，就如同定力彈簧一樣由鋼帶捲製成。使用外力將彈簧由 ...

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