1. High density MDF formaldehyde content varies according to its environmental level:
High-density fiberboard environmental protection grade is divided into E0, E1, E2, is GB certification, formaldehyde limit is e2≤5.0mg/l, E1≤1, 5mg/l, e0≤0.5mg/l. It can also be said that the release of formaldehyde per litre of air, EO for international standards, is very environmentally friendly; E1 is a national standard.
2. High-density plate according to the National Standard Gb11718-89 stipulates: The wood fiber or other plant fiber as raw material, the application of aldehyde urea resin or other applicable adhesives, made density in 0. 50~0. 88 range of plates, known as medium and high-density fiberboard. High-density plate than particleboard grip nail strength, screw tightening if the loose, because the density of the plate strength is not high, it is difficult to fix. Moreover, the furniture uses the high-density board, but the poor quality high density board furniture, the formaldehyde content is very high, to the human body harm also is very big, after the drying after the plate can eliminate the formaldehyde.