... for operation. Furthermore, it will not block pipes over long-time usage due to its low impurity.Polyaluminium chloride for water ... , reddish brown granule/FlakePAC use precautions, and dosage1, according to the different raw water conditions, can do small trial first ... , ventilation, shade, and do not damp. How to use1, use should be made according to the quality scale, elect water purification effect ...