We have inspectors at every step of our production process from purchasing to shipping until the finished product is tested and qualified. After the finished product, you can apply for a third-party testing company to test the product. Packing. The packing material is packed in the spleen bag. Put in the card. If it is sunglasses, it is recommended to wrap the milk bag at both ends in order to protect the lenses. Wrap it in a pocket and put it in a box. Boxes can be transferred for 10. There are special wil