General project: Metal processing machinery manufacturing; Sales of CNC machine tools; Sales of metal cutting machine tools; Sales of metal forming machine tools; Mechanical parts and component processing; General component manufacturing; General equipment manufacturing (excluding special equipment manufacturing); Sales of mechanical parts and components; Sales of bearings, gears, and transmission components; Seal sales; General equipment repair; Installation services for ordinary mechanical equipment (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law)