T/NTAS 008-2020
Technical specification for sapphire grading and testing (English Version)

Standard No.

T/NTAS 008-2020

Language

Chinese, Available in English version

Release Date

2021

Published By

Group Standards of the People's Republic of China

Latest

T/NTAS 008-2020

Scope

This document stipulates the technical requirements for sapphire grading testing, testing rules, conclusion expression, conclusion approval, and record documents.

T/NTAS 008-2020 history

• 2021 T/NTAS 008-2020 Technical specification for sapphire grading and testing