China Electronics Technology Group Chongqing sound and light Technology group Co., Ltd is the subsidiary group of CETC, aiming at integrating specialties of analogue integrated circuit, micro acoustic device and photoelectric device in Chong Qing.

Chongqing sound and light Technology group is consist of three institutes, in which, No.24 institute is the sole institute specialized in analogue integrated circuit, No.26 institute possesses the most complete categories in sound meter technology, No.44 institute is the sole semiconductor optoelectronics institute, producing CCD device.