付款用由卖方可接受的信誉好的银行开出的保兑的、不可撤销的信用证。

付款用由卖方可接受的信誉好的银行开出的保兑的、不可撤销的信用证。
【正确答案】：Payment is made by a Confirmed Irrevocable letter of credit issued (opened / established) by a reputable bank acceptable by the seller.