... designer. 2. Panel can wash, good protection of durable color, characters, logos and other panel ... proof, waterproof, anti-oil, anti-corrosion and erosion of harmful gases proof, acid and alkali proof, quakeproof ... the costs are lowest,the life expectancy of different types of membrane switch is more than 100 million times. ... ), tactile type 170-397g (6-14 Oz) Switch stroke: flat type 0.1-0.5mm, tactile ...