询盘英文翻译

亲们，这句话该如何翻译啊 offers submitted through internet are not acceptable unless those offers are received in our company through registered mail (，dhl."etc) before the closing date including all required documents such as tender purchasing receipt and bid bond ) for biding to the tender otherwise the offers will be neglected . 感觉句子结构好复杂，都不知道哪个修饰哪个了