Such packaging bags have the characteristics of non-toxic, odorless, low density, high melting point and high strength. They are a common packaging material for domestic enterprises. At present, the commonly used types on the market are square bottom valve bags

Such packaging bags have the characteristics of non-toxic, odorless, low density, high melting point and high strength. They are a common packaging material for domestic enterprises. At present, the commonly used types on the market are square bottom valve bags

Such packaging bags have the characteristics of non-toxic, odorless, low density, high melting point and high strength. They are a common packaging material for domestic enterprises. At present, the commonly used types on the market are square bottom valve bags

Such packaging bags have the characteristics of non-toxic, odorless, low density, high melting point and high strength. They are a common packaging material for domestic enterprises. At present, the commonly used types on the market are square bottom valve bags