求翻译：故开立信用证时，请将效期地点开立在中国到期，交单期限最少不能少于提单签发日后15天，当然18天会更好。另为了避免不必要的修改，请开立信用证前，先将开证申请发送我们，经确认无误后，再正式开立是什么意思？

Therefore, opening of letters of credit, please open a valid place in China due to pay a single period of not less than the bill of lading issued at least 15 days after, of course, 18 days will be better. Another in order to avoid unnecessary modifications, before the opening letters of credit, issu

Therefore, when the opening of letters will be valid for locations to open in China due to the single-period, at least not less than 15 days after the bill of lading issued 18 days, of course it will be much better. Another, in order to avoid any unnecessary modifications to the opening of letters w

When draws up the letter of credit, please draw up the effective date place in China expired, the invoice deadline will be least cannot be short in bill of lading signing and issuing in the future 15 days, natural 18 days will be able to be better.另为了避免不必要的修改, 请开立信用证前, 先将开证申请发送我们, 经确认无误后, 再正式开立

Opened credit, effective duration location opening in China until, period for presentation at least can't less than Bill of lading issuance 15 days, course 18 days better. Another modifications to avoid unnecessary please before credit is, first issuing application sends us identified errors and the

When the credit is, you would have the effect of location opened in China in the period expired, period for presentation at least 15 days after the date cannot be less than the Bill of lading issued, 18 days is better, of course. In order to avoid unnecessary modifications, the credit is initial, fi