Co-extruded film bag: The product has a two-tier structure, volume light and environmental advantages. The outer layer is kraft paper, lining bubbles. Bag beautiful, the surface is easy to write, its unique toughness prevents the bag ruptured; inner transparent bubbles have good cushioning effect to prevent the goods from pressure, touch, falling damage .... Suitable for mailing CD discs, tapes, electronic components, circuit boards, optical lenses, books, documents, photo frames, gifts, watches ... and other items, is a personal mailing company to send samples of the preferred products. (Outer material according to customer requirements: aluminum foil, aluminized various colors, anti-static function ... print a variety of patterns plus easy tear strip, etc.).