Each mountain bike frame is independently designed and customized, with precise crystallization of aerodynamics, geometric mechanics, balance mechanics and ergonomics to ensure good performance and stability of the frame aluminous alloy chassis Aluminum alloy material with high strength, lightweight superior performance, greatly reduce the weight of the vehicle, so that riding more relaxed and pleasant robot welding Robot welding frame, welding spot uniform smooth beautiful, than manual welding strength, more durable, safer riding