GKZ41,KEYS STRAIGHT KEY FOR GKN SERIES
GKZ42,KEYS 90DEG FOR GKN SERIES
GKZ43,GKZ KEYS LEFT-RIGHT ADJ KEY
GKZ44,GKZ KEYS UP-DOWN ADJ KEY
GKZ45,GKZ KEYS MULTIDIRECTION KEY
GKZ51,开关硬件 SAFETY
GKZ51C,开关硬件 SAFETY
GKZ51M,KEY FOR GKM
