Covna valves use advanced stainless steel and alloy materials that effectively resist various chemical corrosions, including acids, alkalis, salts, and organic solvents. With special surface treatment processes, the valves can operate stably in highly corrosive environments, significantly extending their service life. In hazardous waste treatment facilities, Covna valves' corrosion resistance increases their service life by about 40%, reducing replacement frequency and maintenance costs.