English settlers discovered coal in Eastern North America in 1673, but commercial coal mining did not begin until the 1740s. It remained a small industry until the early 1800s, as American settlers preferred to use the plentiful supplies of wood.Free consultation 40 years of industry experience providing one-stop solution
Leavve A Message
Note: If you have any needs or questions, please leave a message, and we will reply to you as soon as possible.
Address:Zhengzhou High-tech Industrial Development Zone, China