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Qingming Festival, also known as the outing Festival, Xingqing Festival, March Festival and ancestor worship Festival, is held at the intersection of mid spring and late spring. Qingming Festival originated from the ancient ancestor belief and spring festival rituals and customs. It has both natural

The reason why the bottom paper is wrinkled when the paper tube is made：

The corrugated board and honeycomb board with the same face paper and core paper, the same amount of paper and the same adhesive between the core layer and face paper are tested for performance. The test data are shown in Table 1.Standardization specified by data:(1) The flat pressing strength of ho

(1) Light weight, less materials and low cost. Compared with other plate structures, honeycomb sandwich structure has the largest strength / mass ratio, so the performance / price ratio of its finished products is good, which is the key to the success of honeycomb paperboard.(2) High strength, flat

Paper Edge Protector