Finished oil tankers in operation during the regular replacementofoil types, cargo will be carried out in order to appropriate the water washing operation.
成品油轮在营运过程中经常更换油种，为了适货就要进行水洗舱作业。
2
In order to the drawbacks of the prior art, the utility model provides a convenient oil filter for fume exhaust fan which has a simple structure convenient for replacementofoil filter paper.