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6. Siling shares2. Zhongda Lide5. Best

Highlights of the company: the main business is self-lubricating bearings, and the ball screw products of the company can be applied to the action control parts of humanoid robots.6. Siling shares2. Zhongda Lide

Highlights of the company: we have successfully developed joint-related core components such as CD servo driver, hollow multi-turn absolute value encoder and frameless torque servo motor.4. Changsheng BearingHighlights of the company: we have successfully developed joint-related core components such as CD servo driver, hollow multi-turn absolute value encoder and frameless torque servo motor.