Environmental protection grade of board materials

E1 grade: Formaldehyde emission ≤ 0.124mg/m³ (National Standard)
E0 grade: Formaldehyde emission ≤ 0.05mg/m³ (National Standard)
ENF grade: Formaldehyde emission ≤ 0.025mg/m³ (National Standard)
F1-4 grades: Formaldehyde emission (Japanese Standard)
F☆: ≤ 5mg/L
F☆☆: ≤ 1.5mg/L
F☆☆☆: ≤ 0.5mg/L
F☆☆☆☆: ≤ 0.3mg/L

Wood Panel Classification
Density Board: Made from wood powder and glue, with a relatively high formaldehyde content (not recommended)
Ecological Board: Made from thin wood slices and wood blocks with glue, using a large amount of glue
Multi-layer Board: Each layer of wood board is bonded with glue, and the quality depends on the quality of the glue
OSB (Oriented Strand Board): Made from large wood chips, with strong stability and similar performance to particle board
Particle Board: Made by pressing wood chips, with balanced performance and high cost-effectiveness