1,Microcrystal Glass Faceplate 2,High Quality Crystal Plate 3,Stainless Steel Suitable for factory, school, restaurant ... ordinary gas/oil focal , Environmental protection: no flame, no dust, exhaust no pollution air, ultra low noise design (below 45 ... structure,Beautiful appearence: stainless steel seiko meticulous humanized design, high-grade durable, easy to clean,Durable: 430 durable stainless ...