Kneading board: Imports the high strength stainless steel Foundation plate: Imports the high strength stainless steel or addsthe hard aluminum sheet Pressed key: Uses the laser carving or chemistry etching, the enteringcolor oil, the clarity is high, has the abrasion resistance Pressed key life: Is bigger than 2 million time Pressed key travelling schedule: 0.45mm Pressed key dynamics: 3N Operating temperature: -40 ℃ ~ 65 ℃