Mainly driven by the engine gearbox, gearbox installed on the power to drive the sprinkler, sprinkler pump power, the tank's internal liquid sprayed out through the pipe network. Scope of work: from the ceiling height: is equal to or more than 7m, sprinkler width: greater than or equal to 14m, maximum range: greater than or equal to 28m; adjusting the pillars, the range is more than or equal to 28m; also can be adjusted into a mist, with a range of more than or equal to 5M.