In the production of automotive fasteners, nitrogen is used at many stages. During the heat treatment stage, the fasteners are placed in a controlled atmosphere of high purity nitrogen to prevent oxidation and maintain the required metallurgical properties, resulting in excellent mechanical properties such as high strength, high precision, toughness and corrosion resistance. Nitrogen can also be used in the surface treatment of automotive fasteners, nitriding and nitrogen carburizing and other processes involve the diffusion of nitrogen to the surface of the fastener, forming a hard and wear-resistant protective layer, effectively improving the service life and performance. 

"Zhongsu Hengda" to provide customers the 50Nm3/h 99.99% nitrogen generator has reached the customer site, installation and debugging is completed, will soon be put into use. 

"Zhongsu Hengda" always adhere to the "Quality + Service" concept, with high quality products quality and considerate service to win customers recognition.