JB-T 2930-1991 低压电器 产品型号编制方法

K30JB/T293019911991-08-281992-07-01()11991-08-28JB/T293019911992-07-01()JB/T293019912JB/T293019913JB/T293019914JB/T29301991JB/T29301991*2100044*88012301/16X/XXXX,XXX19XXXXX19XXXXX1XXXXXX.XXXXXXX