求翻译：甲方应在7月1日前把30%货款通过电汇的方式预付给乙方，50%货款于8月20日通过100%保兑的不可撤消的即期付款信用证支付，余款在销售期内无其他违反合同条款情形的通过电汇支付。是什么意思？

Party A shall be July 1, has advanced to the 30% payment by telegraphic B, 50% payment on August 20 through 100% confirmation of an irrevocable sight payment letter of credit to pay the balance in the sales During the period no other violation of the terms of the contract situation, pay by wire tran

Party A shall be before 1 July to 30 per cent of the money by telegraphic transfer prepaid how to party B, 50% of purchase price on 20 August, with 100% of the premium dollar is irrevocable letter of credit payment and the remaining in the sales period no other cases of violation of the terms of the

The party of the first part should give before July 1 30% loans through the telegraphic transfer way prepay the second party, 50% loans through 100% guarantees cashing the immediate payment letter of credit payment on August 20 which cannot be abolished, the spare money in the sales time does not ha

Party a should be before July 1 payment by wire transfer in advance to 30% b, 50% loan on August 20 by 100% confirmed irrevocable sight payment letter of credit payments, balance in the sales period, no violations of the terms of the contract through a wire transfer payment.

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