Plate 

Sliding Board (mainly in Fiberboard, Particleboard) is a Panel, use adhesives containing formaldehyde and other harmful substances. 

Many closet door manufacturers in the market, its planks are produced domestically, even with rough lumber, plank formaldehyde content, distribution of indoor, pollution of the environment. 

In the cold season, when the door is closed, and health impacts on consumers even more.