12V electric fuelpump series fueldispenser is vehicle portable series, compact structure, and convenient operation. Portable fueltransfer pump is installed on and driven by tank-truck. Mobile fueldispenser can realize mobile fueling service. Vehicles greaser is a kind of greaser that can move with the vehicle by virtue of the auto powers in order to satisfy the demand of mobile urban or ruraloilsales, seismic design, suitable for use in vibration environment.