The device is developed based on natural experiments in primary requirements and characteristics of the modern development of the laboratory is all kindergartens, primary standardization, standardization, allocation of equipment will be on grade. Students in the use of injection molding leg appearance with Treasury moisture, anti-acid, elegant design, ease of installation. The main frame leg Japanese cold-rolled plate rolled into a curved shape, rust-proof treated by the use of chemical electrostatic spray with rust-proof, anti-acid, anti-corrosion of the technical requirements, sturdiness and durability, never change.