He He, in fact your worry is unnecessary. Now most of the MDF used in the cabinet only on door panel, not the carcase. And then now the MDF is becoming more eco,the formaldehyde is very low. Further more, the raw materials of mdf is exposed in the air, for the door panel itself, it must have something cover on face and on the edge. Like melamine, laminate or veneer, the PVC edge banding could also prevent the ommission of formaldehyde. So be ease