Valve, Valve Block, Manifold Block manufacturer / supplier in China, offering Extreme-Duty High-Pressure Double-Acting PTFE Piston Seal Ring for Mining Hydraulic Systems, High-Pressure Double-Acting PTFE Piston Seal Ring for Heavy-Duty Hydraulic Presses, High-Pressure Double-Acting PTFE Piston Seal Ring for Injection Molding Machines and so on.