=========跟单区（id,item, qty, link, price, contact)=============.
跟单
Qty: １6
Item: GNC Triple Strength Fish Oil 1500
Link: http://www.gnc.com/GNC-Triple-Strength-Fish-Oil-1500/product.jsp?productId=12643679
Price: 9.99
qty: 10
GNC Hair, Skin & Nails Formula
link: http://www.gnc.com/GNC-Hair-Skin-Nails-Formula/product.jsp?productId=3943821&cp=4046473.33909586
price:9.99
Item: GNC Triple Strength Fish Oil 1500
Link: http://www.gnc.com/GNC-Triple-Strength-Fish-Oil-1500/product.jsp?productId=12643679
Price: 9.99
qty: 10
GNC Hair, Skin & Nails Formula
link: http://www.gnc.com/GNC-Hair-Skin-Nails-Formula/product.jsp?productId=3943821&cp=4046473.33909586
price:9.99
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