Wiring column thread depth: In order to effectively avoid the phenomenon of slippery wire in the process of use, the thread depth to 21mm. let the connection voltage line more solid, not easy to loosen, to eliminate hidden problems. PA66 material: 1, has good insulation and dielectric properties, the use of safe and secure. 2, has good heat resistance aging, flame retardant. Nickel plating process: improve the wear resistance of the product surface, corrosion resistance. Sealing gasket: It can make the sealing between the product and the plate better when the screw is tightened.Widely used in energy storage, batteries, storage cabinets, high-current machines and equipment, and other scenarios.