... , reddish brown granule/FlakePAC use precautions, and dosage1, according to the different raw water conditions, can do small trial first ... high, usually used in wastewater treatment.B, plate-and-frame type poly high aluminum chloride content, insoluble matter in water ... , ventilation, shade, and do not damp. How to use1, use should be made according to the quality scale, elect water purification effect ...