复合夹纸板是一种用于造纸行业包装纸板用的夹纸板,它由面层、中层和底层结构组成。夹纸板的技术特征在于面层和底层为玻璃纤维材料,中间层 Laminated cardboard is a paperboard used in the paperboard packaging cardboard, which consists of the surface layer, the middle and the bottom of the composition. The technical characteristics of the folder board is that the surface layer and the bottom layer are fiberglass materials and the middle layer