{HEAD ~ The polygonal shape} of the scrubber chambers contributes to {TAIL ~ a greatly improved washing and disintegrating action} on the material being treated 
contributes to
{ HEAD ~ The polygonal shape } of the scrubber chambers contributes to { TAIL ~ a greatly improved washing and disintegrating action } on the material being treated
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH