... , bearing, hardware tools,etcelectronicsPCB board, electronic parts, TV parts, computer parts,etcAuto industryengine parts, gear box, shock absorber, auto nozzle ... ultrasonic cleaner is unique wonders.4.Watches,precision instruments:with the V-KOOL special ultrasonic cleaning,watches,precision instruments, ... ,precision circuit boards,parts used. false tooth ultrasonic cleaner with lid to reduce noise