| http://www.w3.org/ns/prov#value | - A plurality of units are disposed around the universal transfer robot and include a loading unit for receiving thereon the dry workpiece to be polished, a polishing system including at least one polishing unit for polishing the workpiece which is transferred from the loading unit, a washing system and a drying system defined by at least one washing unit for washing and drying the workpiece which h
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