QJ 490-1986
Technical conditions of black nickel coating (English Version)
- Standard No.
- QJ 490-1986
- Language
- Chinese, Available in English version
- Release Date
- 1986
- Published By
- Professional Standard - Aerospace
- Latest
- QJ 490-1986
QJ 490-1986 history
- 1986 QJ 490-1986 Technical conditions of black nickel coating
