PREMIUM QUALITY: The valve body is made of 59 fine copper, ensuring corrosion and rust resistance. Utilizing high-end ceramic disc cartridge imported from Spain, tested up to 500,000 times without any dripping issue. The high-end Matte Black finish is manufactured with a scratch resistant coating for improved colour longevity. The faucet has passed the 10-grade salt spray test to ensure its durability against corrosion and scratches.