material is SUS304 stainless steel plate,the outer wall material is high quality cold rolled steel plate, the external surface electrostatic coating treatment, the color is standard Simplewell color .The middle material is 100mm polyurethane foaming and glass fiber cotton insulation layer. 3）The floor of the workshop is a non-slip pattern steel plate, anti-slip slope could?ensure the car can easily enter and leave the workshop. 4）The laboratory equipped with a twin-?door with inside and out