This Schopper Air Permeability Tester was designed according to QB/T1667. It is used to test the air permeability of materials like paper, bag of cement, cable paper and so on.
Sponge Resilience Tester GT-LE02 is used to test the rebound height and used to determine the rebound resilience (coefficient of resilience) within the test term of the polyurethane flexible material.