Bakeware, Tableware, Drinkware and Cookware Design Jingdong Jzao Titanium Coated Iron Wok by Beijing Jingdong Century Trading Co., Ltd Jingdong Jzao is a wok designed for everyday home cooking. The wok body combines pure black iron with a titanium plasma spray, which fuses ceramic titanium powder into the iron to form a microporous layer. The resulting surface is nonstick without a coating and resists rust and corrosion. A central screw is joined to the handle by insert injection molding, and an anti loosening rubber ring and nut keep the handle stable. A heat insulating structure protects the user from burns. The red finish recalls ceremonial headwear of the ancient Chinese court.