We are one of the biggest manufacture for motorcycle chain and sprocket,our production value is over 6,000,000 USD a year,the products are well selled in Japan,Occident,Southeast Asia and over 30 provinces and area in China.The two brand "STF" and "B.G.D" of the company is strictly according to Japan-tech and Quanlity requiry have the character of High precision,long-using time,good wearability and so on.