HB 479-1989
Square floor column 300×300 (English Version)
- Standard No.
- HB 479-1989
- Language
- Chinese, Available in English version
- Release Date
- 1989
- Published By
- Professional Standard - Aviation
- Latest
- HB 479-1989
HB 479-1989 history
- 1989 HB 479-1989 Square floor column 300×300
- 1970 HB 479-1974 Square floor column 300×300
