... thermosets polymer. Magic Sponge , Maigc Erase , Nano Sponge. How to use? 1. MoistenHi-density Magic Spongewith water fully.2. Squeeze ... coffee sets stains, kitchen sinks,plastic panel, glass. 2. Household Appliances:3. Bathroom Appliances: mirror, bath, tiles, mosaics, ... power supply before cleaning household appliances.4.The heavy oilstain, suggest you use detergent to remove before usingHi-density ...