TradeVerify China Tianjin Yinzhong Chemical Co,.Ltd , which is specializing in Calcium carbide .We have our own raw material factory and crush factory.We control the quality and size,good packing and no power. We have warehouse near the seaport so that we can ship on time.We will make you satisfied with our good quality and punctual shipment.Our principle is " ".Welcome globle friends to cooperate with us.We hope we can get win-win by our both effort.