Zibo Dazhong Edible Chemical Co.,Ltd is committed to producing and supplying world-class water treatment chemicals for various industries. Dazhong has obtained ISO 9001, ISO 14001 and OHSAS 18001 certificates. Dazhong began to produce aluminium sulphate and ammonium/potash alum in 1998.At present,Dazhong is the biggest manufacturer of aluminium sulphate and ammonium/potash alum in Asia.The aluminium sulphate series and alum series are widely used in the large-scale treatment organizations all over the world! Till 2014,Dazhong has invested and built new plant to produce polyaluminium chloride and polyacrylamide(polyelectrolyte).The PAC plant has four production lines and the production capacity is 30,000tons per year.PAM production adopt the latest techniques-spray dry process.Covering an area of 300,000sqm, Dazhong now has over 500 employees and nine departments, including offices, No.1 sales dept., No.2 sales dept., International Business Dept., Supply department, technology department, QC Dept., Production Dept. and Finance Department. Dazhong has a powerful technological department housing 20 experienced technicians, who have been working in the research, development and production of silicates for years; 3 of them are the drafters of aluminium sulphate and poly aluminium chloride standards of China.