A.0.10~0.250 B.0.250~0.50 C.0.50~10 D.10~20
A.1.0~1.5m/h B.1.5~2.0m/h C.0.5~1.0m/h D.3~5m/h
A.2~3m B.3~4m C.4~5m D.5~6m