Zhengzhou Boiler Co., Ltd. (hereinafter referred to as "ZBG"), founded in 1945, is located in High and New Technology Development Zone, Zhengzhou, Henan, China. ZBG has been designing, manufacturing and installing the most reliable and efficient industrial boilers and pressure vessels. As the main export base of industrial boilers and power
can replace a convection oven and a steamer. Combis inject steam in the cooking cavity either by using an internal pressurized boiler or by spraying a controlled amount of water on a hot fan wheel which vaporizes the water. Power burners, better door seals and fan modulation make combi ovens more efficient and more expensive than convection ovens.