Nanjing Changcheng Technology Manufacturing Co., Ltd. was established in 2021, the business scope includes the general projects: metal processing machinery manufacturing; General equipment manufacturing (excluding special equipment manufacturing); Gear and gear reduction, transmission manufacturing; Manufacturing of bearings, gears and transmission components; High-speed precision gear transmission device sales; Gear and gear reduction, transmission sales; Sales of bearings, gears and transmission components; Machinery and equipment sales; Motor manufacturing.