CAS Chengdu Information Technology Co., Ltd. (hereinafter referred to as "CAS Information") was established in 1958 as a whole from the CAS Chengdu Institute of Computer Applications. It has been deeply involved in the digital conference industry for 47 years and has continuously provided equipment and service support for major party and state conferences. It was successfully listed on the Shenzhen Stock Exchange's Growth Enterprise Market in 2017 and is controlled by the Chinese Academy of Sciences. The stock code is: 300678.

Hunan Changsha Zhengming Optoelectronics Technology Co., Ltd.'s main products: indoor full-color LED display, outdoor advertising screen, intelligent interactive all-in-one machine, LCD splicing screen production, installation and maintenance; government designated procurement unit, 3000+ engineering project cases, Changsha, Zhuzhou, Xiangtan have set up exhibition halls for many companies to choose (TEL: 156 1633 0510).