1. Almost all the supplier's main material of kamado is Cordierite, and Auplex is Mullite,it decides the excellent of its thermal shock resistance.
2. All the nuts & bolts are stainless steel. Only the top vent and charcoal plate are made of cast iron, and all other material is stainless steel, and it passed major North America country standard for the cooking grid, like FDA, it's safe & health for food touching.
3. Cast Iron Charcoal Grate & Top Vent are powder coated. It passed 24 hours salt fog testing (highest standard)
4. Gasket is made by refractory material, it can touch fire directly over 2 seconds.