现有一案，一家不具有相应资质等级的建筑公司甲挂靠于另一高资质建筑公司乙，甲公司以乙公司名义与发包方签订建设工程承包合同。合同签订后，甲公司将工程质保金通过乙公司帐户向发包方支付，后发包方下落不明，质保金无法追回。 请问：已公司对甲公司质保金损失应否承担责任 In the existing case, a construction company that does not have the corresponding qualification level is anchored to another high-quality construction company, B, which signs the construction contract with the employer in the name of Company B. After the contract was signed, Company A paid the engineering guarantee money to the Employer through the account of Company B, after which the Employer’s contract was unknown and the guarantee money could not be recovered. Excuse me: Has the company a company guarantee money loss should bear the responsibility