... cement bag 1)Size: as your required 2)top: square + valve; 3)bottom: square or gusset 4)Usage:cement,salt etc kraft paper cement ... , 12x12, 13x13, 14x14, 18x18 can be customizedDenier600D to 1500DWeights/ m²65g/ m² -80g/ m² white color or transparent pp materialTreatUV treated or as ... the B/L)Special RequirementsAs the customers' requirements kraft paper cement bag