According to the latest regulations, can financing guarantee companies borrow money from abroad?

You can't.

The regulatory authorities stipulate that financing guarantee companies shall not engage in the following activities:

(1) Absorbing deposits;

(2) granting loans;

(three) entrusted to issue loans;

(4) Entrusted investment;

(five) other activities prohibited by the regulatory authorities.

If a financing guarantee company engages in illegal fund-raising activities, it shall be investigated and dealt with by the relevant departments according to law.