... of the product itself and designer. 2. Panel can wash, good protection of durable color, characters, logos and other panel contents ... , abrasion resistant, installation and connection convenience. 4. Tightness is good, moisture-proof, dust-proof, waterproof, anti-oil, anti-corrosion and ... 2. Flat keys or tactile type 3. Embossed button with good tactile feel 4. Pre-assemble with or without metal domes ...