About these production process of masks, we can share some with you for reference.
1.Firstly, printed design is the most important;
2. The front outside fabric is connected with the back inner fabric by stitching.
3. Leaving one round hole to install air valve on the mask.
4. Adding one layer of filter pocket into the interior for inserting filters.
5. Then, adding the adjustable garter of mask on both sides.