HDF feature:
1) Density:> 850
2) Thickness swelling rate of water absorption: <9%
3) Moisture content: 5%-7%
4) Difference of density: -4%-+4%
5) Wood glue bond strength: >1.3mpa
6) Surface wood glue bond strength: >1.3mpa
7) Formaldehyde release: <9.0mg/100g
8) Static bending strength: >40mpa
9) Elastic modulus: >3500MPa