How to identify the quality of silicone key case?

1.elasticity

silicone key case have good elasticity, because high elasticity is mainly from the molecular chain of silicone segment movement, so in the purchase first look at the elasticity of car key cover and smooth to determine the quality.

2.high tear strength anti destruction ability

silicone car key cover products high tear strength anti destruction ability outstanding, long service life, less susceptible to outside interference.

 3.Hardness and elongation stress

Hardness and elongation stress are important indicators of stiffness (stiffness) of silicone car key cover materials, Is also a method  identify the quality of silicone key case products.