Опубликовано admin - пт, 10/09/2020 - 16:05 1. Chinese standards: Iron and Steel general 1.1. Steel for automobile parts 'file' GB T 221-2000.pdf GB T 221-2008.pdf GB T 20887.2-2010.pdf GBT 709-2019 .pdf GBT 20887.1-2007.pdf GBT 20887.3-2010.pdf GBT 20887.4-2010.pdf GBT 20887.5-2010.pdf GBT 20887.6-2017 .pdf GBT 20887.7-2017.pdf GBT 32796-2016.pdf Q-BQB 310-2009 .pdf YBT 166-2012.pdf
