... impact strength Certificate: ISO 9001:2000, SGS(polypropylene bags)Technical standard: GB8946-1998, 8947-1998SPECIFICATIONSMaterial: granule ... propertiesEnvironmentally friendly for foodUSDGE SCOPE:Open woven polypropylene bags are widely used in manufacturing, construction, trade, ... of construction waste and non-food waste, packaging bulk products, building materials, sand, coal.Packing, storge ...