Ion coating machine mainly refers to a type of coating that needs to be carried out under high vacuum, including many types, including vacuum evaporation coating machine, vacuum multi-arc ion coating machine, vacuum intermediate frequency magnetron sputtering coating machine, multi-functional intermediate frequency magnetron Sputtering multi-arc composite ion coating machine, vacuum optical (electron beam evaporation) coating machine and other series of vacuum coating equipment, the main idea is divided into two types of evaporation and sputtering.