sent by seller to buyer prior to every shipment,not just for every contract

sent by seller to buyer prior to every shipment,not just for every contract
sent by seller to buyer prior to every shipment,not just for every contract

sent by seller to buyer prior to every shipment,not just for every contract
卖方在每次出货前寄给买方,并不是每个订单

不光是针对每份合同,而是在每次装运之前,都要由卖方送寄买方