China 'GB/T 17739.2-2021
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 17739.2-2021
Microfilming of technical drawings and other drawing office documents—Part 2:Quality criteria and control of 35 mm silver gelatin microfilms 技术图样与技术文件的缩微摄影 第2部分: 35mm银-明胶型缩微品的质量准则与控制
Issued Date:2021/5/21
Implemented Date:2021/12/1
Issued by:
The Standardization Administration of the People's Republic of China
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