The responsibilities of a guarantee company generally include:
Business post, the main job is to find enterprises and individuals with credit enhancement needs.
The main job of the risk control post is to conduct risk control screening on the company's business.
Legal post, the main job is to assist the legal compliance of business.
There are other jobs, but the core is still the above three categories.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.