QB/T 190.2-1993
Test case and its accessories, gold alloy covering layer second part testing for purity, thickness, corrosion resistance and bonding strength (English Version)

Standard No.

QB/T 190.2-1993

Language

Chinese, Available in English version

Release Date

1994

Published By

中国轻工总会

Latest

QB/T 190.2-1993

QB/T 190.2-1993 history

• 1994 QB/T 190.2-1993 Test case and its accessories, gold alloy covering layer second part testing for purity, thickness, corrosion resistance and bonding strength