... are widely used in packing food, grains, pharmaceuticals, chemicals, mineral product Big bag is a kind of flexible ... They are widely used in packing food, grains, pharmaceuticals, chemicals, mineral products, such as powder, granules, bulk goods ... make packing products.Changzhou S-Millet Plastic Packaging Co., Ltd. is a brother company of Changzhou Weiyu Precision Machinery Co., Ltd.,which is ...