لصق أكياس الورق متعدد الطبقات صمام حماية البيئة مواد البناء التعبئة والتغليف أكياس الورق

Video Description:
Discover the Pasted Valve Multiwall Paper Bags, perfect for environmental protection and building materials packaging. These bags are ideal for industrial, chemical, and food material powder, featuring high capacity and optional PE-liner for moisture-proof protection. Customizable for various needs, including waterproofing and anti-slip features.