Zibo GuangZheng Aluminum Sulphate Salt Co., Ltd, a subsidiary company of Zibo Mining Group, was founded in 1991. With an annual output of industrial aluminum sulphate 150 thousand tons and of non-iron 20 thousand, Our company now is the biggest aluminum sulphate production base in China, and was the first enterprise to pass ISO9002: 1994 Quality System Authentication in the same trade in 1998. In 2002, our company passed ISO14001:1996 environmental management system certification and successfully passed ISO9001: 2000 Quality Management System Certificate, and acquired Drinking Water Treatment...