... ,chips,candies. Zhenghui Printing&Packing Industrial Co.,ltd produce Back and center- seal pouches,the information is as follows:1 ... ,biscuits,nuts. We can produce the pouches as you’re specification and application,and of course your design and printing.2.Features ... these pouches have strong in their center and back,which can preserve the packed item from air,moistureand other external factors.(3) ...