=========跟单区（id,item, qty, link, price, contact)=============
原来还可以跟单啊。
id: song1984
item: GNC Natural Vitamin E 400180 Softgel Capsules
link: http://www.gnc.com/product/index.jsp?productId=3335768
qty: 2
price: $22.99
contact: 98602455
item: GNC Natural Vitamin E 400180 Softgel Capsules
link: http://www.gnc.com/product/index.jsp?productId=3335768
qty: 2
price: $22.99
contact: 98602455
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