Which authoritative companies in China do industry and industry analysis and research?

As far as I know, the top ten well-known companies in China are as follows: Hejun Consulting, Prospective Research Institute, AMT Consulting, CCID Consulting, HC Research, Zhengluojun Strategy, Analysys Consulting, Peking University Zongheng, iResearch Consulting and Mercer Consulting.

Forward-looking information of the parent company of Forward-looking Research Institute has been successfully listed. Prospective Research Institute is the first "big data+research+consulting" institution in China. It is the only consulting and research institution in China with "self-built data information system", "complete market segmentation research system", "powerful government media channel" and "systematic multi-thread parallel operation capability", and continues to lead the research and consulting field.