The customer and the Agricultural Bank agree on a fixed time and a fixed amount. According to the inquiry of ABC official website, the fixed investment of ABC Fund is a business between ABC and customers, which means that customers and ABC agree on a fixed time and a fixed amount. After the customer is authorized, ABC will automatically deduct the customer's bank account at the agreed time. Users can apply directly through the counter of business outlets, or go through the exchange procedures through online banking or mobile banking APP, so it is ok.