Reinforced polypropylene sheet is molded. Smooth surface , high strength, light weight, acid and alkali resistance, corrosion resistance, non-toxic and tasteless. The frame is made of high strength steel, with high strength, stable structure and long service life. Equipped with automatic pull plate , automatic liquid connection , PLC automatic control, simple and safe operation, with a variety of safety devices. The main beam guide rail surface is equipped with anti-corrosion and wear-resistant stainless steel track.