A process 1, wherein the powder of a synthetic resin comprises {TAIL ~ fine particles} having {HEAD ~ a spherical shape} 
A process 1 , wherein the powder of a synthetic resin comprises { TAIL ~ fine particles } having { HEAD ~ a spherical shape }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD