... 3.Excellent quality&service WD mixing tank: 1,The thermal insulation materials of the tank use polyurethane foam or pearl cotton ... are imported 304 or 316L. The inner surface of the tank adopt mirror polishing Ra≤0.28μm, and the outer ... level gauge(static pressure, capacitance, contactless, ultrasonic type, glass type), air respirator, thermometer(digital display or dial plate type), CIP butterworth ...