SMC ball valves are corrosion resistant and lightweight. They were the first ball valve made of FRP that succeeded after many failed trials due to the material's strengths. Key technologies include eliminating friction between parts, strengthening watertightness with O-rings, and adding metal reinforcements for durability. SMC ball valves have excellent chemical resistance, durability, productivity and cost benefits compared to PVC and stainless steel valves. They have found applications in industries like shipbuilding, construction, and chemical plants.