Founded in 1991, Ningbo Sunrun Industry & Trade Co.,Ltd. is a professional manufacturer engaged in producing bicycle transmission parts. The key products range from derailleur sets, freewheels, alloy hub,alloy chainwheels & crank, brake sets. Keeping ahead in the industry, every member of Sunrun has regarded the perfect quality as the life of an enterprise. By adopting advanced technique such as high precision cool-forging figuration. numerical-control processing and heat treatment, Sunrun creates a full unique range of bicycle transmission parts. The registered brand “SUNRUN, HEMU, TONGKEEN” enjoys fine reputation.They command a ready sale in Europe, Central & South America and Southeast Asia, etc. Welcome customers to visit, inspect, and discuss business with our company.