Low temperature cryogenic storage tank and the liquid nitrogen tank, liquid oxygen tank, LNG tank is a vertical or horizontal double vacuum insulated storage tank, the selection of materials for austenitic stainless steel; outer container materials according to the user area, according to the provisions of the state for the selection of Q345R, the inner and the outer container sandwich filling insulation material and vacuum perlite. Product is the National Technical Supervision site inspection and issue pressure vessel inspection certificate, product specifications have 5-100 cube, working pressure 0.8/1.6Mpa. Nitrogen is the main raw material for nitrogen fertilizer industry. Nitrogen in the metallurgical industry is mainly used for the protection of gas, such as steel rolling, zinc, chromium, heat treatment, continuous casting and so on to use it as a protective gas. In addition, to the blast furnace in the injection of nitrogen, LNG storage. Widely used in the construction of electronic industry, chemical industry, gas filling station construction, petroleum industry and glass industry