environmental protection, use of imported high-end medical-grade silicone materials, non-toxic, tasteless and harmless. all-sealed design, waterproof, dustproof, anti-oil, anti-acid, can be used in any bad environment, and can be disinfection and cleansing the water. free curled, easy to carry, save space. good elasticity, hit without sound, comfortable soft touch feeling. special design and production process, so that the silicone keyboard is lean, and use of special high-strength silicone adhesive glue, without any metal nails, performance stable and reliable.