In fact, the so-called medium density fiberboard is similar to the blockboard on the market. It takes natural solid wood as the core board, and plywood is sandwiched on both sides. From the point of view of panel furniture, it can still be used, and it has the characteristics of deformation prevention. But some furniture factories in the market use high-density board as the core material of MDF, which is not good, because MDF is afraid of water and can't eat nails.