Qingdao Shengdate International Trade Co., Ltd. is a professional enterprise engaged in production, sales and trading of wheels bearings window door roller accessories for 12 years. Our products have good market at home and abroad such as Canada, Africa, Southeast Asia, the Middle East, South America etc. Each process, from product design, mold manufacturing, product forming to production and assembly under strict test and control. Better quality better price. Welcome and we are looking forward to cooperating with you in future!