A.0.001~0.005MPa B.0.002~0.009MPa C.0.003~0.007MPa D.0.004~0.010Mpa
A.55℃ B.65℃ C.75℃ D.85℃
A.0~0.1℃ B.0.1~0.5℃ C.0.5~1℃ D.0~0.5℃