pac: a.a variety of source water turbidity b.fast settling velocity,corrosive small,low labor intensity PAC Appearance: yellow or red and yellow, showed mixed solid powder and small pieces.Properties: Molecular formula [AL2 (OH) nCL6-n] m (n ≤ 5, m ≤ 10), is a type of inorganic polymer flocculants.Features: For a variety of source water turbidity, PH wide application and alum to form large, fast, ...