Tel ipli qo'shimchaning standarti qanday va xom ashyoga qanday talablar qo'yiladi?
Simli qo'shimchalar xalqaro standarti DIN8140, MS21209, N913/N926A/N926B/N926C (GE maxsus), 1301-SCT 149+ Uen (Ericsson maxsus), BS 7752 (Buyuk Britaniya), MO-44421 (Toshiba Japan) va. .
batafsil ko'rish