In which year was Yitian integrated stove awarded to the president unit?

20 12.2007, Yitian Company invented the side-suction down-discharge integrated stove and obtained the patent certificate. 20 12 Yitian Company is also the president unit of Shengzhou Kitchenware Association, the vice president unit of Zhejiang gas appliance Industry Association and the vice president unit of china national hardware association. Yichang Yitian is the only direct store and the only after-sales store.