Economic ultimate water cuts are in positive correlation with oil price and commodity rate of crude oil and in negative correlation with tonnage dues of oil and tonnage operating cost of fluid .

经济极限含水率与油价和原油商品率成正相关关系，与 吨油 税金和吨液操作成本成负相关关系。

Hencetherefore before any new regulation being adopted vessels that are registered in Hong Kong willshould still be levied vessel tonnage dues the way it was with preferential tax treatment beforetreatment before the return to china .

因此，在未有新的规定前，对在香港登记注册的船舶仍应按回归前的规定使用优惠税征收舶 舶 吨 税。