Download or read book GB T 38009 2019 Translated English of Chinese Standard GBT 38009 2019 GB T38009 2019 GBT38009 2019 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2021-01-10 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the requirement for the nickel release from the metal parts of metal and combination frames, the method of wear simulation, the measurement of nickel release, calculations, and test report. This Standard applies to those spectacle frames which, if produced with materials or surface treatments containing nickel.