The Happycall New Series cookware comes with a power-intensive Diamond DNC coating that enhances durability and strength, offering four times the heat conductivity of most cookware. Diamond crystals embedded in the coating are certified by labs in Korea, the USA, and China, providing the highest hardness, strength, and thermal conductivity—five times that of copper and 140 times that of stainless steel. The body is produced using advanced nanotechnology and a 2,500-ton special forging process. Its ceramic non-stick exterior is hard, durable, relatively easy to clean, and 100% food-safe and PFOA-free. This premium-quality cookware is compatible with all heat sources, including induction, gas, electric, ceramic, and halogen, and is made in Korea.