Further, when {HEAD ~ a polishing layer} is made of {TAIL ~ thermoplastic polyurethane} with a non foam structure and having a specific physical property, the effects become more significant 
is made of
Further , when { HEAD ~ a polishing layer } is made of { TAIL ~ thermoplastic polyurethane } with a non foam structure and having a specific physical property , the effects become more significant
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH