f 4m from each other, then spread them evenly on the lawn(the quantity of sand depends on the pile height of the turf). Afterwards, use the combing machine to sweep the sand into the fibers and to comb up the fibers. Do this process once longitudinally and transversely.Brushing: to brush the grass in the vertical and horizontal one time by the grass-brushing machineCheck and Acceptance: Inspect the entire finished lawn as per concerned standards and requirement. If any defects found, correct it.