Environmental Protection Grade of Density Plate
Based on the harmfulness of formaldehyde emission from density plates to the environment, the density plates are divided into the following environmental protection grades in mg/L unit (formaldehyde emission per liter of air):
E0 grade: formaldehyde emission less than 0.5 mg/L;
Level E1: Formaldehyde emission < 1.5mg/L;
E2 level: formaldehyde emission less than 5 mg/L;
CARB grade 2: formaldehyde emission less than 0.3 mg/L;
Note: E0, E1 and E2 refer to domestic standards, while CARB P2 refers to European and American standards.
E2 boards can only be used indoors after finishing, and E1 and E0 boards can be used indoors directly. CARB P2 does not limit the use area.
What we usually call “zero formaldehyde” does not mean that there is no formaldehyde in the board, but that the free formaldehyde in the board is less than or equal to the aldehyde content in the wood itself (generally 0.04 mg/L~0.12 mg/L). The so-called “zero formaldehyde” means that the material is selected without aldehyde and no aldehyde is produced in the production reaction process, which will not cause harm and pollution to the environment for the producers. It can’t be confused with grade E0 sheet metal, which is one level higher than grade E0 in principle.