公司简介
Technology & Trade Co., Ltd. Zhengzhou exchange constant is a professional audio and video multimedia network system integration, network solutions, as one of the high-tech enterprise, located in Henan technology market Cyber Cyberport. Now present our company's main projects include: Smart Radio / campus radio / broadcasting addressable constant pressure / background music broadcasting / digital broadcast / cable television / two-way teaching / webcast / large screen display system / multi-function conference room systems / digital monitoring system