- Density: above 0.82 gm/cm3
- Moisture content: 8 to 12%
- The general flatness of shutter: less than 1 mm
- Local plainness: below 0.3 mm
- Impact indentation: below 0.15 mm
- Shock resistance: can withstand more than 35 blows
- Resistance to misuse: excellent
- Glue adhesion strength: excellent
- The resistance of shutter to immersion in water: excellent
- Nail holding strength: above 1200 N
- Screw holding strength: above 1500 N