Watch as we walk through the full pickling and cleaning process at Zhejiang Yugong Fluid Technology, from initial setup to real-world testing. This step-by-step demonstration shows how stainless steel, carbon steel, and titanium butterfly valves are treated to achieve a fine, corrosion-resistant appearance. You'll see the workflow, quality checks, and the results that help B2B buyers evaluate surface finish and durability. A clear, practical look inside a professional valve manufacturing facility.