What responsibilities will the company's supervisors bear?

Legal analysis: Generally speaking, the corporate personality of a company is greater than that of a natural person, that is, when working for the company, the behavior of the legal representative belongs to the duty behavior, and if something happens, the company will be responsible first. As you said, signing a contract is a job behavior.

Legal basis: Article 202 of the Company Law of People's Republic of China (PRC). If the company makes false records or conceals important facts in the financial and accounting reports and other materials provided to the relevant competent departments according to law, the relevant competent departments shall impose a fine of not less than 30,000 yuan but not more than 300,000 yuan on the directly responsible person in charge and other directly responsible personnel.