Luoyang Mine friend Trading Co.,Ltd specializes in all kinds of mining chemicals, products include collecting agent , flotation agent,flocculant agent, extracting agent, flame retardant agent and plasticizer; The annual output of 8,000 tons, exports of 3,000 tons, exports to America, the European Union, Asia, Africa etc, more than 30 countries and regions. Luoyang Mine friend company has technical cooperation with several nonferrous metals research institutes and universities , provide?product...