==========跟单区(id, item, link, qty, price, contact) ====数量写最后要的数量即可，需要是4的倍数。
需要凑单的请在闲聊区召唤
跟单，谢谢
id: xiu
item: GNC Triple Strength Fish Oil 1500 120 softgels
link: http://www.gnc.com/product/index.jsp?productId=12643680&cp=4046473.19473336
qty: 4
price: $44.99
contact: 92356215
item: GNC Triple Strength Fish Oil 1500 120 softgels
link: http://www.gnc.com/product/index.jsp?productId=12643680&cp=4046473.19473336
qty: 4
price: $44.99
contact: 92356215
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