What are the powerful his vendors in China, and what are the authoritative his vendors in China?

There are not many hospitals with strong his in China, mainly including Shanghai Jinshida Weining, Beijing Tian Jian, Beijing Goldwind Yitong, Zhejiang Lianzhong and Hangzhou Chuangye. As for ranking, there is no such thing, mainly to analyze whether the products developed by this company are suitable for their own use. Although we use the little-known Goldwind Yitong, it still feels good.