Valve, Valve Block, Manifold Block manufacturer / supplier in China, offering Advanced Double-Acting Custom-Compound Rubber Scraper Ring for Hydraulic Cylinders, Double-Acting Oil-Resistant Scraper Ring Dust Wiper Seal Ring for Hydraulic Fluid Containment, Double-Acting Polyurethane Scraper Ring Dust Wiper Seal Ring for Fast-Moving Rods and so on.