... the stoneOperabilityFrequent de-waxing, polishing wastes materialOne to four types of agents shall be used according to the type, color, density or degree ... shields are optional.Availability of ToolsPolishing machine, polishing padCrystallizing machine, steel woolCrystallizing machine, polishing padCorrosionStrong alkali de-waxing agent dissolves stone, mica and metal ionsSteel wire ...