联诚精密(002921.SZ)：产品广泛应用于商用空调压缩机、工业机器人、农业机械等多种行业

Group 1 - The company, Liancheng Precision (002921.SZ), focuses on the research, design, production, and sales of various precision mechanical components [1] - The company's products are widely used in multiple industries, including commercial air conditioning compressors, industrial robots, engineering machinery, commercial vehicles, passenger vehicles, hydraulic machinery, and agricultural machinery [1] - The company is committed to expanding new customers and new business opportunities, as well as developing new products [1]