A.1.5~3.5MPa B.0.5~0.35MPa C.3.0~5.0MPa D.0.5~1.0MPa
A.0.05~0.l0g/cm3 B.0.07~0.15g/cm3 C.0.20~0.25g/cm3 D.0.25~0.50g/cm3
A.0.05~0.10g/cm3 B.0.07~0.15g/cm3 C.0.7~1.5g/cm3 D.0.5~1.0g/cm3