T/JSGA 006-2021
Technical specification for ruby grading and testing (English Version)
- Standard No.
- T/JSGA 006-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- Group Standards of the People's Republic of China
- Latest
- T/JSGA 006-2021
- Scope
- Technical requirements for ruby grading testing, testing rules, conclusion expression, conclusion approval, and record documents
T/JSGA 006-2021 history
- 2021 T/JSGA 006-2021 Technical specification for ruby grading and testing
