... . ModelJJ-2072 manual type Water-based lotion Ultrasonic cleaning machine2. Cleaning jobs auto parts ,metals,horologe,PCB and so on ... to the amount of cleaning items, the implanted adequate cleaning solution to cleaning.5 When warming cleaning, dissolving in a period ... of the use of corrosion and inflammable solution for cleaning liquid,Devices to prevent corrosion and dissolution dangerous.4, The ...