... , purified drinking water, sewage; 2, industrial water purification, industrial wastewater, mining, oil field injection water, making water purification, metallurgy ... coal washing, leather and all kinds of chemical waste water treatment; 3, industrial application; paper sizing, printing ... to user demand products. Specifications NameSolid(HDLL)Liquid (HDLL)AppearanceThe lower part, gray to grayish ...