中密度纤维板是各种人造板材中最接近天然木材的一种。其结构均匀，密度适中，板面平滑细腻，容易进行实木面皮一般在0.1mm-0.6mm，一些知名木门生产企业和知名品牌的实木复合门所用实木面皮厚度在0.6mm以上。因为实木面皮的厚度过小过薄在生产实木复合门过程中的胶粘过程里容易产生透胶、渗胶等现象，从而会影响实木复合门的外观和重量品质。
MDF is one of the most natural wood-based panels. Its structure is uniform, density is moderate, board surface is smooth and delicate, easy to carry out solid wood veneer generally in 0.1mm-0.6mm, and the thickness of solid wood veneer used by some well-known wood door manufacturers and well-known brands of solid wood composite doors is more than 0.6mm. Because the thickness of the solid wood veneer is too small and too thin, it is easy to produce the phenomenon of glue penetration and glue penetration in the process of producing the solid wood composite door, which will affect the appearance and weight quality of the solid wood composite door.