As the basic components for frequency control and frequency selection, crystal is widely used in information equipment, mobile terminals, communication and network equipment, automotive electronics, smart meters, electronic banking password cards and other fields. With the rapid development of emerging electronics industry, the Internet of Things, and the wide application of new wireless communication technologies such as 5G, Bluetooth 5.0 and Wi-Fi 6, It is estimated that the global demand will reach 312.5 billion in 2035, with a supply gap of 100 billion.