Qingdao Add Industry and Trading Co. Ltd is a manufacturer and exporter of Chemicals include sodium alginate, calcium chloride and chitim. It has been established in 1995. Since the company established, we persist in the principle of making products with high quality and competitive price. We have founded strict quality control system. We also have a group of skilled workers and experienced technecians. After years efforts, our products have been exported europe, united states, southeast asia.