... 30 days Ultrasonic cleaning machine IndustryCleaning objectsjewelryJewelry, diamond, gold, silver products,etcmachineryMoulds, precision parts, pressing parts, camera parts, ... applied:daily use items such as gold and silver jewelry,jewelry,hair,accessories,brooch,glasses,watch,chain, ... obscured by inkpad of buildup,commonly used WELGO special cleaner can guarantee clear and smooth.if combined with ...