It is made of high quality steel materials and formed by cold harden welding. It has big strength, good load capability and four folded layers. 3D object is achieved. Load capability of different types of storage shelves: 0.8T to 2.0T. It is easy to managing. The surface is zinc plated, so it is beautiful and durable. There is no pollution in every process.. It is also the replacement of wooden cases. The goods can be easily accessed because the gate can be open.