... samples, or 5~7days for plain samples.3.Supply period:all the year round4.Price:According to ... bag such as frozen bag, vaccum bag, retort bag, pet food bag, seafood bag, coffee bag, meat bag, snack bag....The style can be flat bag( ... bags. The waterproof and antifreezing PE bags, freeze-resistant vacuumized bags, heat-resistant boiling and steaming bags , aluminum-plating bags and aluminum foil bags ...