{TAIL ~ The process} 1, wherein the mat comprises {HEAD ~ synthetic felts}, synthetic fabrics, natural felts or natural fabrics 
{ TAIL ~ The process } 1 , wherein the mat comprises { HEAD ~ synthetic felts } , synthetic fabrics , natural felts or natural fabrics
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH