In order to adapt to the development of modern microelectronics industry, as an important auxiliary material for BGA and CSP in IC production, solder balls are widely used in modern microelectronics. They are notebook computers, mobile communication devices, computer motherboards, light-emitting diodes, liquid crystal displays, PDAs, The technical auxiliary materials necessary for the production of functional ICs, such as digital camera, play a vital role in the miniaturization process of large-scale integrated circuits. At present, the market demand for solder balls is very large, with an annual growth rate of nearly 90%. In particular, high-precision, small-diameter solder balls are seriously out of stock.