... one of the leading manufactures producing oil tanker in china 2 We are also qualified to customize oil tanker according to ... equipped with refueling pump , flow meter, tanker aircraft, refueling reel 2 can be separated into several small unattached tanksSpecial function description1can ... outside pressure 3KPa , the real breathing valve would open 12000 L 4*2 oil tanker,fuel tanker, fuel truck