... bearing, hardware tools,etcelectronicsPCB board, electronic parts, TV parts, computer parts,etcAuto industryengine parts, gear box, shock absorber, auto nozzle ... used for skin care,long-term use of lubrication to keep skin young and elastic.use of V-KOOL special ultrasonic cleaner ... ,binocular,microscopes,cameras,video cameras and other parts of the parts of the lens by ultrasonic cleaning ,etc.all the ...