... % silicone rubber,harmless to body4.process according to customer's sample5.certification:CE,ISO,SGS,ROHS,etc.Detailed Product Description ... can be used in the rigorous environment for its function of waterproof, dust-resistant, oil-resistant, anti-static, anti-acid and anti- ... keyboard last forever.6. The film can keep its reliability at operating temperature of -50200.7. It is general for any size ...