Cov qhov rooj hluav taws tuaj yeem muab cov qhov rais, qhov rooj kaw, qhov cua kaw, thiab lwm yam raws li qhov xav tau. Sab nrauv ntawm lub qhov rooj hluav taws yog electrostatically txau, thiab cov pob khawm, qhov rooj xauv, qhov rooj kaw thiab lwm yam hnav yog lub teeb thiab ruaj khov.