6.The latter two are relatively large oil trolley handling and stacking integrated vehicles. The front one belongs to small oil bucket vehicles. The first three types have a rated load of less than 300kg. The third and fourth types are large tilting oil bucket vehicles with certain automatic types. For example, the third type of manual tilting oil bucket vehicles can be turned over electrically by motor, and the fourth type of semi electric tilting oil bucket vehicles can be turned over electrically by motor at the same time, It can lift the oil bucket truck electrically.