Sponge polishing disc: its cutting force is weaker than the wool polishing disc, it will not leave a swirl, which can effectively remove the flaw of the medium paint. The bottom of the polishing disc has an automatic paste on the back for quick conversion of the polishing wheel. It can be used for grinding and polishing of common paints and clear paints. It is generally used for polishing and waxing after polishing the wool. It is recommended that the polishing machine rotate at a speed of 1 500 to 2 500 r/min and do not exceed 3 000 r/min. Sponge polishing discs can be generally divided into the following three types according to color: yellow disc: generally made of grinding disc, hard, used to eliminate oxide film or scratches. White plate: Generally made of polishing plate, soft and delicate, used to eliminate hair scratches or polishing. Black plate: generally used as a reduction plate, soft and soft, suitable for the polishing of the transparent paint and the restoration of ordinary paint. The sponge polishing disc can be divided into the following three types according to the shape: straight cut type: high speed, large heat energy, flexible, and the size of the diameter x thickness is 152.4 mm × 50.8 mm. Flat cut type: large area, good heat dissipation, relatively stable, diameter × thickness size is 203.2 inln × (25.4 ~ 50.8) mm. Corrugated type: The working fluid is not easy to splash, and the diameter x thickness is 203.2 mm × (25.4 ~ 38.1) mm. Maintenance instructions: After rinsing in warm water, squeeze out the water and place it face-on in a clean place for drying. Do not use soap or detergent to clean, do not machine or dry clean, do not use a comb or screwdriver to clean the sponge wheel. Our company also supplies faucet polishing machine .