RST International Chemical Co.,Ltd is a leading manufacturer and supplier of Calcium chloride,Magnesium Chloride ,Bromide products and Caustic Soda in the north of China . Since it was established in 1996, we committed to offering high quality products as well as the most competitive price to our clients. Our main products :Calcium chloride, magnesium chloride, Snow Melting Agent, calcium bromide, sodium bromide , zinc bromide ,caustic soda and so on .