... ; 3)bottom: square or gusset 4)Usage:cement,salt etc pp ad star cement bags1) Usage: storage and packaging2) Material: ... Usage:suitable for advertisements,shopping,gifts,promotions,and packing17) Waterproof, recyclable and eco-friendly Raw Material100% new pp or ... ’ s requestUsageRice, flour, grain, salt, sugar, fertilizer, sand, cement, animal food, food staff, construction material, powder and so on ...