$10
Directives for the work of reference materials(1) General rules for description of reference materials in technical standards
NEQ ISO 6-1978(E)
全国标准样品技术委员会
This standard is the original Chinese electronic standard.
If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.
After you successfully purchase, we will send the electronic version of this standard to your email address