The material is made of stainless steel frosted board, the bottom plate and the layer plate 1.0mm thick side plate, the surrounding plate thickness is 1.0mm; the inner layer is divided into four layers, the built-in middle layer board is two; the layer plate and the bottom plate are made of 1.0mm thick U-shaped stainless steel reinforced channel steel support reinforcement; the upper and lower layers are equipped with double-layer stainless steel sliding door structure. The thickness of the door panel is 0.8mm, and the standing foot adopts 51*1.0mm stainless steel structure pipe with adjustable stainless steel bullet foot.