Valve, Valve Block, Manifold Block manufacturer / supplier in China, offering High-Pressure Double-Acting Thermoplastic Materials Piston Seal Hydraulic Seal NBR for OEM Construction Equipment, High-Pressure Double-Acting Thermoplastic Materials Piston Seal Hydraulic Seal NBR for Earthmoving Machinery, High-Pressure Double-Acting Thermoplastic Materials Piston Seal Hydraulic Seal NBR for Mining Equipment and so on.