... *Surface hardness: equivalent to glass,7 Mohs*Dust-proof, explosive proof*Durability:5years Grade A LCD monitor: Brand:LG or SUMSUNGSize: 15" ... 100M netcard driver)Multi-media system:amplifier; stereo Loudspeaker; magnetic-proof,net card, sound card,integrated display card, Operation system: ... paint or plastic-spray,1.5-2.0MM steel,moisture-proof,anti-rust,anti-acid,anti-dust Packing:foam ,carton, ...