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4. Changsheng BearingHighlights of the company: the products are mainly used in driving and transmission application scenarios in rail transit, wind power generation, power tools, robot automation and other industries.7. Double-ring drive

2. Zhongda Lide7. Double-ring drive

6. Siling shares3. Wuzhou New YearHighlights of the company: In the field of intelligent robot with body, Wuzhou New Year listed the planetary roller screw of intelligent robot with body as a key research and development product.