sima industrial zone, changping village,donngguan City, Guangdong Province, China Dongguan, Guangdong
Dongguan Callsun electronic technology CO,.LTD situated in a famous manufactual city--Dongguan of Guangdong Province,which at the demand infrared speech transmission system series products research and development, production, sale is body high new ...
amplifier, speaker, microphone, teaching audio equipment, PA system