25
Plug (metal part) CU, NI -
Plug (outer
covering)
TPE Corrosion
treatment
Cable (string) TPE + weaving -
Cable junction TPE Corrosion
treatment
Cable control ring TPE Corrosion
treatment
Cable TPE Corrosion
treatment
Switch PC UV coating
Earphone speaker
part
TPU Corrosion
treatment
Earphone outer
covering
PC UV coating
Earphone (AKG
area)
PC Corrosion
treatment
Earphone (cable
border side of the
speaker)
TPE Corrosion
treatment
Earpiece Silicone Corrosion
treatment
Unit SUS304 Barrel polishing
Cable TPE -
Plug (metal part) SUS301 -
Plug (resin part) PC -