==========跟单区(id, item, link, qty, price, contact) ====
跟单！
Id: 小狗崽
iterm: GNC DHA 600 60 SOFTGELS
link: http://www.gnc.com/product/index.jsp?productId=11862713&cp=4046473.15312306
Qty: 6瓶
price：$25(3瓶)*2=$50（6瓶）
contact: 96418146
iterm: GNC DHA 600 60 SOFTGELS
link: http://www.gnc.com/product/index.jsp?productId=11862713&cp=4046473.15312306
Qty: 6瓶
price：$25(3瓶)*2=$50（6瓶）
contact: 96418146
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