Download or read book YY T 1681 2019 Translated English of Chinese Standard YYT 1681 2019 YY T1681 2019 YYT1681 2019 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2020-06-20 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard defines the basic terms and definitions of unique device identification system.