We, Shenzhen Jiankun Sporting Goods Co., Ltd is specializing in manufacturing the cranksets for bicycles, we have a complete set of technology and professional personnel for the developing and producing of the bicycle cranksets independently. We have the complete productive lines, including forging, heat treatment, mechanical processing and assembly line.Meanwhile, we also have impact test machine, fatigue test machine and precision torque tester and etc to test cranksets before shipment.We commit ourselves to build high quality products at a competitive price in the the market. Finally, we can offer products configuration and customization service.