1)best qualiry 2)competitive price 3)special design and inquirements is allowed 4)qucik delivery kraft paper envelope1 bubble lining 2 recyclable 3 shock resistance4..multi-functions for mailing and packingMaterials: polyethylene & kraft paperCharacteristics: shock absorption, impact resistance, heat-sealing performance, also is non-toxic, moisture proof.Usage: widely used in workshop heat ...