Bluetooth, LoRa, WLAN, UWB, etc. have always been the communication industry has been a technology of great concern, and with the continuous maturation of wireless technology is derived from the distribution of wireless communication products in different fields, they are deeply into the various aspects of people's life and work, the most common is the cell phone, wireless phone, Bluetooth headset, etc., for the broad market and good prospects for wireless communication products, KKG R & D personnel also follow the consumer trend to introduce products to meet market demand, such as TACT SWITCH ultra-thin volume keys touch switch, side button switch, Type C interface and other products stand out in the industry. In response to the broad market and good prospects for wireless communication products, KKG's R&D staff has also followed the consumer trend to introduce products that meet the market demand, such as the TACT SWITCH ultra-thin volume key tap switch, the side button switch, Type-C interface, and other products that stand out in the industry.