Chongqing Wanqiao Cable Co., Ltd．is a sole subsidiary of Chongqing Communications Research and Design Institute (CCRDI), which is the first technology corporation in China to conduct complete technology researches, test, evaluation and production in bridge cable and tunnel luminaire. The company obtained the ISO9002 quality system certificate in 2000.

There is a workshop for production of PE protection cable，pre-formed parallel wire strand(ppws)，anchorage and lamp used for tunnel in the company．The workshop, covering more than 2 hectares，is equipped with the complete sets of advanced production and inspection facilities. The annual production capacity of both cable and lamp can be up to 30,000 tons and 70,000 sets respectively. By now，the company has provided cable products and consulting services for over 100 bridges and the lamp has been successfully applied to more than 100 tunnels．