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10. Beite Technology10. Beite Technology1. Lei Sai Intelligence

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.2. Zhongda Lide6. Siling shares

4. Changsheng Bearing7. Double-ring drive2. Zhongda Lide