RFH UV laser cleans up grease on the tablet circuit board   With the invention of the tablet computer, computers are no longer constrained by the shortcomings of being bulky, difficult to move, and requiring assembly. Instead, they have become mobile and touch screen-like devices that integrate the advantages of various electronic devices. In the use and production of tablet computers, it is inevitable to come into contact with stolen goods such as engine oil on the assembly line, and it is very stubborn to be contaminated on the circuit board and difficult to remove.