英语翻译由鉴于此,参照中国银行改证费用标准,经与中国银行的最终核实,国外的信用证修改每次应为130美元/次,而非SIS公

In view of this,with reference to the Bank of China's standard fees for amendment of letters of credit and after confirming this with the Bank of China,any amendment of foreign letters of credit should be charged at USD130 per occasion and should not be based on SIS company's stated amendment charges.
如果这是一份回信,你大可以直接一点,如下：
Having checked the standard fees levied by the Bank of China for the amendment of letters of credit and having confirmed the same with them,I wish to advise that any amendment of foreign letters of credit will be charged at USD130 per incident and not as per the charges quoted by the SIS company.