... K, Cu, Mg, Co and Cr ions in the marble from acid decomposition. With the action of thermal force of ... Power, Slurry, Liquid)Crystal ShieldScope of ApplicationGranite, marble, ceramic tiles (excl. polished tiles), timberGranite, marble, sand stone (cautious for black stone)Granite ... are the effective for your reference. polishing detergent for marble,terrazzo,concrete,manmade-marble(Green Shield)