求助：俄罗斯客户临近付款让我给他签新合同

本来客户是准备打款了，30万人民币的单子，但是突然给我发了份合同说些这些不懂什么意思 That his contract for only his Russian banks. That is passport for payment. By his contract he will possibly to pay with higher limit 10mln rmb. But real supply will be by your contact. Possible sign seal his contact? If he has limit 10 mln. Next time he can buy more from your company according his high limit operation. For his Russian banks. Usually when llc import goods from foreign LLC, Russian banks make passport for supply with possible money limit in operation. For that option they sign seal such own contracts. Payment possible after making payment passport from bank. For payment passport he need to sign his contract for higher limits. And after getting payment passport from bank. He will send money. 本来蛮期待的，外贸新手以为可以成单了 有没有大佬知道这是啥意思啊，啥银行的东西看不懂 会不会是套路我什么的，这客户也聊了有两三个月了