1. With strong and durable, beautiful and generous furnace body.Especially for large capacity furnace which need the stronger steel structure .From the point of view of safety dumping has better adopt steel shell furnace. 2. Selenium steel made of magnetic yoke of the magnetic field lines generated by the induction coil has played the role of shielding emission to reduce the magnetic leakage so that it improves the efficiency and energy saving is 5%~8%. 3. The furnace cover reduces heat loss and improves the equipment safety 4. Cyclone type smoke hood has excellent dust absorption , thermal insulation effect and take up a small space.