Profile: Tianjin Port Free Trade Zone Tiangong International Trade Co., Ltd. produces various chemical products. We offer polyvinyl chloride resin, PVC paste resin, caustic soda, liquid chlorine, hydrochloric acid, epichlorohydrin, chlorobenzene, sodium hydrosulfide, titanium tetrachloride, barium chloride and DDT. Sodium hydrosulfide is used in the desulphurization of fertilizer, farm chemical and mineral separation. Barium chloride is a white crystal soluble in water, slightly soluble in alcohol and insoluble in ether. It is used in refining brine in caustic soda electrolysis, metal heat treatment, pigments, ceramics, medicine and insecticide. DDT is used as an insecticide for cotton, fruit trees, and vegetables. It is used to kill mosquitoes, flies, and lice. Caustic soda is mainly used in the fields of metallurgy, petroleum, chemical industry, textile, papermaking, printing and dyeing, pharmacy & soap. Liquid chlorine is a yellow liquid. It vaporizes at normal pressure and has active chemical property. It is widely used in organic and inorganic synthesis, farm chemical, plastic, plasticizer, synthetic rubber, synthetic fiber, disinfectants, magnesium refinement & in rare metal.