业务洽谈 business discussion                           

 限**复subject to reply**

限**复到subject to reply reaching here **      

有效期限time of validity

有效至** valid till **                                        

  购货合同purchase contract

销售合同 sales contract                                    

 购货确认书purchase confirmation

销售确认书sales confirmation                            

一般交易条件general terms and conditions

以未出售未准subject to prior sale                      

需经卖方确认subject to seller’s confirmation

需经我方最后确认subject to our final confirmation