JY 50-1987
Demo Electromagnetic Relay (English Version)

Standard No.

JY 50-1987

Language

Chinese, Available in English version

Published By

Professional Standard - Education

Status

Withdraw

Replace By

JY 50-1979

Latest

JY 50-1979

JY 50-1987 history

• 1970 JY 50-1987 Demo Electromagnetic Relay
• 0000 JY 50-1979