First, the nature of the product PAC (basic aluminum chloride) referred to PAC or BAC, is a new high polymer flocculant. It is between AlCl3 and Al (OH) 3 between the product, its main features are: 1. Floc forming fast, good activity, good filtration. 2. Without adding an alkaline agent, the case deliquescence same effect. 3. Adapt to a wide PH value, for the waters wide, wide range of uses. 4. Less salt-treated water. 5. Can remove heavy metals and radioactive substances to water pollution. Second, the product uses energy sterilization, deodorization, bleaching, fluoride, aluminum, chromium, phenol, oil, turbidity, in addition to heavy metal salts, with the exception of radioactive contaminants in the purification of water has a wide variety of uses, such as: 1 . Purification of drinking water, sewage. 2. Industrial water purification, industrial wastewater, mining, oil field injection water, clean paper, metallurgy, coal washing, leather and various chemical industrial waste water treatment. 3. Industrial production applications: paper sizing, printing and dyeing dyeing, quick-setting cement, precision casting sclerosis, but also for refractory bonding, glycerine refining, sugar refining, wrinkle-free fabric, cosmetics, pharmaceuticals and other industries and wastewater recycling recycling . 4. In the refining industry, for oil-water separation.