... parts, semiconductor chip, optical glass, parts of watches , glasses, jewelry..HJ-1030P Immersible Ultrasonic Cleaner4. Features:The immersible ultrasonic cleaner is ... silicon, tools, lens, spectacle frames, jewelry and glass containers...etc.6. Specifications: ModelHJ-1006PHJ-1012PHJ-1018PHJ-1024PHJ-1030PUltrasonic Power300W600W900W1200W1500WUltrasonic Frequency28KHz/40KHz28KHz ...