The metal drying system is used for the customers who have to pay more cost of bricks and have limited land space. There’re two kinds of metal drying, the single layer, and multiple layers. The customer can choose according to the actual production scale. One thing that should be clear is that you cannot use coal and wood as the fuel to heat the metal drying system; natural gas and diesel is OK. Link: www.bestongroup.com/egg-tray-machine/dryer/.