... ,3920I,3920J). They are trailed sprayers with auto hydraulic or manual folding system. The customer could choose different tank capacity and ... power. TankMaterialFiberglass/polyethyleneCapacity2000,3000 (optional)Boom length(m)12-18 (Manual operation) 18-25 (Hydraulic drive)Rotation speed(r/min)540Working pressure(Mpa ...