When all components are fused to be combined with one another, the fusing guides 60 are melted on the corresponding surface of the outer cover 70, thus sealing up {HEAD ~ connections} between the inner cover 40 and {TAIL ~ the outer cover} 70 
When all components are fused to be combined with one another , the fusing guides 60 are melted on the corresponding surface of the outer cover 70 , thus sealing up { HEAD ~ connections } between the inner cover 40 and { TAIL ~ the outer cover } 70
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH