Chip glue refers to the glue that must be applied around the chip in the production package mode from DIP, QFP, PGA, BGA, to CSP/MCM in the PCBA process. Chip glue can play the role of fixing, insulating, moisture-proof, filling, buffering and other protection chips, in the anti-drop, anti-mildew, anti-corrosion, anti-salt spray, anti-acid and alkali, anti-vulcanization, anti-aging, high and low temperature impact, high temperature and high humidity and other extended chip life has a significant effect. Its types are: bottom filling adhesive, cofferdam filling adhesive, COB bonding adhesive, inductive adhesive and so on.