details：
Fashionable and wrinkle resistant matte metal surface
The bubbles in the material can be recycled plastic, and the weight does not change for environmental protection
Bubble obtained ROHS test certificate（NO. CTB181012032C-ZS）
Matte film double-sided printing for a more eye-catching brand image
Self sealing adhesive closure is reliable and tamper proof
Zipper easy to tear strip for quick and easy opening
The internal and external standard dimensions are as shown in the diagram, and the production customized dimension tolerance is ± 5mm (envelope dimension diagram updated)