... .C, on the selective adssubstances.orption of dissolvedPAC use precautions, and dosage 1, according to the different raw water conditions, can ... is not drying, without dilution, loading and unloading easy to use, the price advantage of relatively cheap, disadvantage is the ... , ventilation, shade, and do not damp. Poly-aluminum chloride1, use should be made according to the quality scale, elect water ...