Harmony number instrument, Harmony number instrument, Railway locomotive instrument YDS2 series, Harmony number instrument, Railway locomotive instrument YDS1 series, Harmony number instrument, Railway locomotive speed meter EGS3/8 series. Harmony number instrument, Railway locomotive pressure meter YCS100-IV, Harmony number HSD1C/HSD1B double needle pressure meter YZS-102 series, and Harmony number HSD1C/HSD1B single-needle wind pressure meter Y-100Z series, Harmony number circular voltage table 150V, Harmony number double-needle pressure gauge YCS100 series, Harmony number locomotive front headlights 110V50W and 30V200W, Harmony number headlights 75V350W, TAG：