General standard:

Size: 2000/4000*1200 (L*W) Compressive Strength:450kpa

Thickness:20mm (also provide 25mm and 30mm) Water Absorption:2.90%

Alum. Foil Thickness:0.08mm (both sides) Dimensional Stability:0.53% (70℃+/-2℃)

Density:71kg/m3                                                  Oxygen Index: 57.80%
Fire Retardant: A                                               Smoke Density: 2

Thermal Conductivity: 0.018W/m.k                     Smoke Toxicity: 25
 (Average Temperature 25℃+/-2℃)

Advantage:

Lower heat conductivity, higher thermal efficiency; 
High Fire-Protection rating
Low density, light weight; 
Easy Installation
Foamed with CFC free materials, environment protective; 
Hermetic seal ensures little air leakage; 
With aluminum foil reinforced on both side, its corrosion protective, hygiene, and has a beautiful appearance; 
Foamed with closed-cell structure, it's water-proof and sound-insulated. 
No protrudent flange on the connections, it can save a lot of building space.