Pull testing:

In pull testing, we apply controlled tension to a material to see how strong the material is before reaching its breaking point.

Vibration testing:

Use professional vibration test equipment to check whether ribbon and welded connection will fall off under the set shock condition .

Air leakage testing

We blow air to the bag to make the bag full of air,then close the waterproof zipper tightly. 24hrs later, if the bag keeps the same shape, not getting flatter. It means no air leakage.