Weifang Longstar Economy And Trading Co., Ltd. is a professional chemical manufacturing and supplying company, located in the world renowned ocean chemicals base - Weifang, China, taking advantage of good timing, geographical convenience and good human relationships. Based on the principle of "sincere cooperation, mutual benefits", and under the consensus of factories' management, our company has an elite sales team, integrates sodium silicate plant, chlorides plants and other capable plants, exploring domestic and overseas markets together. With more than 10 years'...