Bis(trichloromethyl) carbonate, Lithium series,Fluorine chemicals ... HANGZHOU CHEMTECH INDUSTRY CO.,LTD is the subsidiary manufacturing company of ZHEJIANG CHEMTECH GROUP CO.,LTMITED. It is the manufacturer of Bis … HANGZHOU CHEMTECH INDUSTRY CO.,LTD is the subsidiary manufacturing company of ZHEJIANG CHEMTECH GROUP CO.,LTMITED. It is the manufacturer of Bis …