What external listed companies are there?

Dongguan Guanjia Electronic Equipment Co., Ltd., Guangdong Mei Intelligent Technology Co., Ltd. and Guangzhou Hongxun Electronics Co., Ltd. ... According to the ranking of China Automation Plug-in Company, 17 companies entered the ranking, among which there are three listed companies, namely Dongguan Guanjia Electronic Equipment Co., Ltd., Guangdong Mei Intelligent Technology Co., Ltd. and Guangzhou Hongxun Electronics Co., Ltd., and the listed companies are specific parts of the joint-stock limited company.