Girls Lunch Bag,Boys Lunch Bag,Outdoor Cooler Bag,Cooler Backpack,Ice Bag Ningbo FonFON Industry&Trade Co.,Ltd , https://www.nbfonfon.com Libery Paper Co., Ltd. of Minnesota, USA developed M-Guard screen wet cardboard, which looks like corrugated paperboard. It is also similar to the commonly used inner liner. It can be printed, recycled, and then beaten. The board's screen wet performance has a visual effect. This screen wet performance is due to the effect of internal chemical bonding during the manufacturing process of the paperboard, saving time without any conversion. The board achieves good screen wet performance through its inherent absorption.