HANGJI.HANGJI was founded in 1973. After over fifty years of development, it has grown into an enterprise group capable of independently designing, developing, and manufacturing various marine auxiliary products such as filters, valve remote control devices, marine modules, and hydraulic systems. Its products are widely used in industries including maritime, aviation, power generation, and petrochemicals. The company occupies a site area of 62,500 square meters and possesses over 300 pieces of equipment, including machining centers, laser cutters, CNC machine tools, and resin sand production lines. It has established a provincial-level engineering technology research center and an intelligent testing center, equipped with advanced specialized testing systems for flow rate, vibration, filtration efficiency, and more. By applying software systems such as CAD, SolidWorks, and PDM, the company has achieved integrated management of product information and processes, driving enterprise management toward modernization, scientific approaches, and standardization. Its primary product portfolio encompasses filters, valves, modules, hydraulic systems, and marine accessories.