White/ Grey self-seal mailbag plastic envelope / courier postal mailing bags

The co-extruded poly mailer is made of poly film , by special machinary, which is co-extruded from many kinds of plastic resins between each layer of the coextruded poly film .

•  Making the bag moisture barrier,gas resistant,puncture resistant and tear resistant performances.

• The inner layer is opaque, which ensures the confidentiality of the packed goods.

• The outer layer is clean creamy white, which is convenient for writing.

•  Enables customers fast and simple sealing as well as prevents others from tampering the inside packed items.