1、 ? The most direct way: get the machine and brush a penny directly, and then call the customer service phone of the third-party payment company. According to the information on the credit card receipt (terminal number, merchant number, merchant name), ask the customer service what is the settlement rate of this machine. If it is lower than what the installer said, it can be said that this machine is a secondary cleaning machine.

2、 ? Generally, third-party payment will give merchants their own independent background, directly log in to the customer management platform of the third-party payment company and log in with their own POS information to check whether the settlement account is their own account, the settlement interest rate and the basic information of the merchants are their own.

3. Generally, the approval of the second cleaning machine is very quick and simple, because the machine has been applied, and it can be used as long as the terminal number is bound. Usually it can be done in a few minutes, and the required information is very simple. One is a photo of my bank card and ID card. There are many of these types on the market now.

Liquidation means that banks or payment companies directly dock merchants. One clearing and two clearing refers to the popular market name. Generally speaking, UnionPay, banks or institutions that have obtained the qualification of acquiring bills (obtained the third-party payment license issued by the People's Bank of China) are liquidated as one clearing, and individuals or companies that have not obtained the qualification of acquiring bills are liquidated as two clearing.

Secondary liquidation means that the payment company or bank first pays the settlement money of the POS machine to a person or company, and then the company or individual settles it to the merchant. Because this company and individual have not obtained the payment license, this settlement is flawed, and there are certain security risks due to the lack of effective supervision and management.