Which patent agencies are good?

China Patent Agency Hong Kong Company; Beijing Liushen Law Firm; China Institute for the Promotion of International Trade; Zhongke Patent and Trademark Agency; Shanghai Patent and Trademark Affairs Company; Beijing Unitalen Intellectual Property Agency Co., Ltd. and so on. The key is that you should make some demands yourself, or ask to read the draft and then send it to the official to see if it is done well. In fact, whether the embodiment part of the specification is fully disclosed (as many embodiments as possible, you should provide more alternative embodiments yourself) and whether the deployment of the claims is reasonable (hierarchical protection) is the key.