Silicon nitride valve, one of four, engineering ceramic components by NGK Ceramics Europe S.A., 1996. NGK Ceramics Europe S.A silicon nitride valve 1996
Four silicon nitride valves, engineering ceramic components by NGK Ceramics Europe S.A., 1996. Four silicon nitride valves 1996
Silicon nitride valve, one of four, engineering ceramic components by NGK Ceramics Europe S.A., 1996. Silicon nitride valve 1996