Download or read book GB T 41042 2021 Translated English of Chinese Standard GBT41042 2021 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2020-06-06 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the scheme of content classification of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal and the related nomenclature and codes. It also puts forward the guiding principles for the development and utilization of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal.