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Ningbo Haihong Hydraulics Co., Ltd. which was founded in 1992, is one of China leading manufacturers of Hydraulic Screw-in Cartridge Valves, including  Pressure  Relief  Valves, Solenoid Valves, Pressure Sequence Valves, Compensator valve, Needle valve, Hydraulic control valves and manifold block etc. In 2004, Haihong has passed ISO9001 quality system authentication. For over 15 years, Haihong has been walking on the way of specialty and steady-development.


Haihong Hydraulics is an all-round enterprise engaged in development, production, sales and after service. Our strong R&D team will customize high quality cartridge valves for you; also our professional sales team will give you on time service. With more than 200 experienced employees work at our ISO9001:2000 certified factory, we can meet most your hydraulic cartridge valves and manifolds requirements. Rather than just manufacturing standard cartridge valve parts, we work closely with our customers for customized hydraulic cartridge valve and manifold block.


With many years manufacturing experience, our products' quality is reliable, we will test all our cartridge valve before release, The main parts of the Screw-in Cartridge Valves are all quenched, which guarantees the hydraulic valves' long working life. We will give one year guarantee for our goods, any quality problems will be highly attention and give positive respond as soon as we can.


As a professional cartridge valve manufacturer, our screw-in hydraulic cartridge valves include cartridge valve-Solenoid Valves, cartridge valve-Pressure Control Valves, cartridge valve-Directional Control Valves, cartridge valve-Flow Control Valves, cartridge valve-Load Control Valves, cartridge valve-Proportion Valves, cartridge valve-Check Valves, Directly Operated Valves, Regulator Pressure-compensated Valves, Pressure relieving valve,Restriction Valves and etc. Our strong R&D team will customize high quality Screw-in Hydraulic Cartridge Valve and manifold for you.


Our development stratagem is company shares benefit with customers and reciprocate society.


Screw-in Cartridge Valves have been widely used in construction machine and hydraulic system on industry because of cartridge valves' advantage:compact size , speedy acting , convenient fixing and unfixing , steady function . Hydraulic cartridge valve can be directly mounted into cavity of manifold block, accordingly failure caused by leakage, shaking , noise or tubing has been reduced and dependability has been advanced. The main parts of the Screw-in Cartridge Valves are all quenched, which guarantees the cartridge valves' long working life.