‧Upper and lower oven are controlled repectively by micro-computing 
　temperature adjustment.
‧Copyright design;  the heating flow-control system prevents heat from 
　leaking out of the oven.Hence,  the heat stays "inside" the oven so every 
　corner in the oven receives temperature  evenly.
‧The machine itself has burn-proof design,  which is to prevent accident 
　during operation.
‧Electronic micro speed adjustment provides accurate roasting speed 
　according to different food.