According to the regulation of the governing authority, security firms, futures dealers, introducing brokers, and discretionary investment businesses should turn in operation bond after company registration. The operation bond can be cash, government bond, or financial bond. The Bank charges no custody service fee if the firm uses the certificate of time deposits of the Bank as the operation bond. For government bond, financial bond, and the certificate of time deposits of other banks, the custody service fee is 1/‰ of the custody amount, which is collected once a year with the collection of operation bond.