Incense board is a patent of Wanhua, which uses straw and MDI glue, and does not contain aldehyde.
The original board is density board, and the No.7 environmental protection board belongs to particleboard, which is produced by Wanhua. However, in order to reduce the odor and improve the nail holding power and deformation resistance of the board, Gu Jia asked Wanhua not to add straw, but to use wood and MDI glue.