Valve, Valve Block, Manifold Block manufacturer / supplier in China, offering Standardized High-Pressure Single-Acting PU U-Cup Rod Seal Hydraulic Seal, Tough High-Pressure Single-Acting PU U-Cup Rod Seal Hydraulic Seal for Construction Machinery, Dependable High-Pressure Single-Acting PU U-Cup Rod Seal Hydraulic Seal for Industrial Cylinders and so on.