According to the request of our customers, Double Safe Tire Company will provide customers with free sample testing services. Both Double Safe Tire products and products from other companies can be tested. Double Safe Tire's existing advanced equipment can accurately measure various parameters of tires, inner tubes, flaps and other products. including: 1. Wear 2. Tensile strength 3. Elongation 4. Hardness 5. Density and more series of data. If you have any needs, please feel free to contact us by phone or email.