There are currently 54 registered legal agencies in Shenzhen. There is no authoritative ranking yet. You can make your own statistics for business volume ranking. The reputation is probably not easy to rank.
As far as I know, the more senior agents in Shenzhen are Zhongzhi and Keji Huafeng, and their corresponding veteran agents (or experts or directors) are Cheng Yisheng and Hu Jike. The focus is slightly different. The former is famous for professionalism, while the latter is famous for business, and both are relatively famous.
Most of the newly established agencies in Shenzhen were established by Zhongzhiyuan’s agents as solo agents, including Xie Zhongzhiyuan, which was independently founded by Cheng Yisheng, the former director of Zhongzhi.
Not long ago, less than ten agencies were invited to attend Shenzhen's "Industrial Transformation and Upgrading and Intellectual Property Development Roundtable" as "Patent Agency Experts", and most of the rest were media and senior government officials. It can be seen from this that There are probably only a few of the more authoritative agencies in the industry:
Zhongzhi, Zhongyi, Keji Huafeng, Xiazhongzhiyuan, Xinchuangyou, Qianna, Shuntianda, and Xinke Da (I only remember these ones, in no particular order).
Among them, the one with the best business volume last year should be Zhongyi, and the ones with the highest reputation should be Cheng Yisheng (Bringing People to Far Away) and Hu Jike (Keji Huafeng).
The above are purely personal opinions and are for reference only!