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By certification 
1. Typical Physical Properties
Material: PP
Thickness: 1.3mm
Upside OD: 33mm
Underside OD: 25mm
Bulk Density: 45Kg/m3
Surface Area: 185m²/m³
Package: 250Liter/bag
2. Standard
Comply to Mechanical Industry Standard of the People of Republic of China HG/T3986/2007.
Material: PP
Thickness: 1.3mm
Upside OD: 33mm
Underside OD: 25mm
Bulk Density: 45Kg/m3
Surface Area: 185m²/m³
Package: 250Liter/bag
2. Standard
Comply to Mechanical Industry Standard of the People of Republic of China HG/T3986/2007
