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Kolysen popcorn paper bag popcorn paper bag manufactured by Kolysen Packaging Integration Co.,LTD. is no doubt the most iconic product since its inception. It combines the advantages such as competitive price, long-term service life, superior stability, and exquisite workmanship. Its quality has been constantly controlled by the QC team from material inspection to finished product inspection. Customers will benefit a lot from all these characteristics.stand up pouches for food,stand up pouch packaging,flat bottom bag.