We are Trang Kenh Chemical and Calcium Carbide Factory( transaction name: TRACO) abranch belongs to Industrial Gas and Welding Electrode Company , astate owner firm under management of VietNam Nation Chemical Corporation. We have been producing and supplying Calcium Carbide and other Additive Plastic and Rubber: Calcium Carbonate Compound, Super Precipitated Calcium Carbonate, and Coated Calcium Carbonate.Hope to have a good and longterm cooperation with you.Thanks alot.