QB 1039-1991
Rotor magnet for analog quartz watches (English Version)

Standard No.

QB 1039-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

轻工业部

Latest

QB 1039-1991

QB 1039-1991 history

• 1991 QB 1039-1991 Rotor magnet for analog quartz watches