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8. Zhaowei ElectromechanicalHighlights 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.7. Double-ring drive

10. Beite Technology5. BestHighlights 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.

4. Changsheng Bearing5. Best5. Best