13 -15 July 2022 (Wed – Fri)
China National Convention Center (CNCC)
Beijing, China


Guangzhou zhunyin Electronic Technology Co., Ltd. is the general agent of "j.d.polardio polar intelligence" series products in China. Polar intelligence is committed to the R & D and manufacturing of audio technology, including speakers, power amplifiers and audio processing equipment. In the intelligent era, it has developed a series of intelligent control equipment, including central control integrated platform, centralized control system, audio matrix, video matrix, conference system, and so on Four channel power amplifier in one, suitable for intelligent audio and video conference room and other places