logo com4

Grades Of Coal

2019-10-28anthracite, often referred to as hard coal, is a hard, compact variety of coal that has a submetallic luster has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.

Copyright © 2019.Henan Mining Machinery Co., ltd. All rights reserved.Sitemap