Legal analysis: the guarantee company's default on the deposit is an economic dispute between the two parties to the guarantee contract, which belongs to the category of civil behavior and can safeguard its legitimate rights and interests through legal channels. In addition, it can also provide evidence materials that are handed over to relevant departments for handling after meeting the conditions for filing a case.

Legal basis: Article 682 of the Civil Code of People's Republic of China (PRC) guarantees that this contract is a subsidiary contract of the principal creditor's rights and debts contract. If the principal creditor's rights and debts contract is invalid, the guarantee contract is invalid, unless otherwise stipulated by law.