The "Maidui" brand PVC-U and PVC-C pipes, fittings, valves, and environmentally friendly water treatment products are widely used in petrochemical, chlor alkali, environmentally friendly water treatment, semiconductor, lithium-ion new energy, nuclear power, photovoltaic, copper foil, aluminum foil, electroplating, medical, food, printing and dyeing fields due to their better corrosion resistance, higher manufacturing standards, and excellent quality control.