Valve, Valve Block, Manifold Block manufacturer / supplier in China, offering High Quality Double-Acting Rubber-Energized Plastic-Faced Seal PTFE Combination Piston Seal for Cylinders, High-Performance Single-Acting Dust Wiper Seal Ring for Extreme Conditions, Phenolic Cloth & Polyester Cloth Self-Lubricating Composite Material Guide Rings Bearings and so on.