The registered address of Convex Transmission System (Ningbo) Co., Ltd. is located in Ningbo City, Zhejiang Province, with Zhou Pengcheng as the legal representative. The business scope includes general projects: sales of mechanical equipment; Sales of bearings, gears, and transmission components; Sales of rubber products; Sales of plastic products; Wholesale of hardware products; Retail of hardware products; Internet sales (except for the sale of goods that need permission) (except for items that need approval according to law, business activities shall be carried out independently according to law with the business license).