Our company Changzhou STW Industrial Co., Ltd. is a group enterprise combined with technological, industrial and trading, locate at Changzhou city, Jiangsu Province, China. Group have two entities : Changzhou Huari Steel Ball Co., Ltd., which specialize in producing kinds of steel ball and rollers; and Changzhou Kaili Transmission Products Factory., which specialize in producing bearing units and housings; We have been manufacturing 0.8mm to 250mm chrome steel ball, carbon steel ball, stanless steel ball, copper ball, aluminum ball, ceramic ball; deep groove ball bearing, tapered roller bearing, cylindrical roller bearing, self-aligning bearing, spherical roller bearing, angular contact ball bearing, thrust ball and roller bearing, bearing units with housings, spherical plain bearing, needle roller bearing and yoke type track rollers; bicycle parts; electric bicycle motor etc. Our products are mianly applied in following areas such as auto parts, textile, chemical-industry, food processing, mining, agricultural machinery and other precision machinery fields. Our supplied products enjoyed a sound reputation among customers. Our tentet is “ Quality first, reality and effeciency, innovation, union and struggle to create the brilliancy. We warmly welcome all customers and friends both home and abroad come to cooperate and develop a better future with us.