The company independently researched and developed the mechanical spring structure, invention patent: 201710836507.4. Through four years of research and development time, a complete mechanical spring system has been constructed. Different load-bearing ranges can be made according to the different load-bearing requirements of customers. The current test maximum load-bearing is developed in cooperation with Haier Group The 50-inch all-in-one touch TV bears 30Kg, and the minimum load is the 0.5Kg-3Kg range of the YL500 series. This patented technology can be used in the medical industry to effectively avoid force failure sinking and explosion accidents with very low probability caused by high-load use of conventional pneumatic rods.