The group standard for "Medium Density Fiberboard" is based on GB/T 11718-2009 "Medium Density Fiberboard" and GB 18580-2017 "Limits of Formaldehyde Release in Artificial Panels and Products for Interior Decoration Materials", T/CNFPIA 1001-2016 "Artificial Panels" On the basis of "Formaldehyde Release Limit" and T/CNFPIA 3002-2018 "Formaldehyde-free Artificial Panels and Products", while ensuring the appearance quality, density and density deviation within the panel, moisture content, static bending strength, elastic modulus, internal bonding strength, On the premise that technical indicators such as surface bonding strength, water absorption thickness expansion rate, and physical and mechanical properties meet the requirements of national standards, the formaldehyde release limit indicator value will be set more strictly, and the formaldehyde release limit will be divided into two levels: aldehyde-free level and E0 level. , and increase the TVOC limit value in the standard.