A.1.45~1.61g/cm3 B.1.47~1.65g/cm3 C.1.45~1.65g/cm3 D.1.47~1.61g/cm3
A.2 B.3 C.4 D.5
A.0.20~0.25mm B.0.25~0.50mm C.0.25~0.30mm D.0.50~0.75mm