Cold –Air Cupola is a traditional cupola, which is made according to national standard of machinery industry for single shift. We adopt advanced technology home and abroad and our own patent from the framework, disposition to parameter etc.to make sure the good usability. The Cold-Air Cupola adopts double row large space tuyeres, and new type pressure equalizing bellows ensure the even wind pressure. The structure of the cupola is simple, which is fit for middle size workshop and cooperate with electric mantle heater to make high quality castings.