Unit Seventeen 方对支付方式的要求 Part One. 471.Our usual terms of payment are by confirmed , irrevocable letter of credit in our four, reaching us one month ahead of shipment. 472.We proposed to pay by 30 d/s. 473.The terms of payment we wish to adopt are confirmed and irrevocable letter of credit. 474.We should like to advise you that payment by collection is acceptable. 475.We would prefer you to pay in US dollars. 476.According to the contract, after receipt of the preliminary shippi[收起]