1.The temperature of the oven is rised by the coal.
2.temperature suitable range:room temperature~280íŠ.
3.spring treat time:one hour for the cold stove,45 minutes for the hot stove.
4.It cost 10kg material for 10000 springs..
5.The oven can be matched with environment-protect filter.after use it,the black
smoke changes to white smoke,and the dust and spark reduce.