This customer has ever traded with you before, because we have not yet or not know this customer's payment history. We ask you to help ensure payment goods to us. and share responsibilities if the customer reject the payment;
This customer had purchased for you before? Because we do not know about the pay history of this customer. We ask you to guarantee payment for the goods to us. And share responsibility for this customer refused to pay us.
This client เคยซ water is sold to you before? Because we don't know about ประวัติการจ่ายเงิน of this client. We ask you to help guarantee the pay for the goods to us.