How to mine coalbed methane

CBM, commonly known as "gas", "coalbed methane", are found primarily in the coal seam methane as a main component hydrocarbon gas. Coalbed methane exists in the coal seam in three states: free state, adsorbed s.......

[Exclusive] intelligent lighting market development analysis

Intelligent lighting refers to the distributed lighting control system composed of technologies such as Internet of Things technology, wired/wireless communication technology, power carrier communication technology, embedded computer intelligent information processing, and energy-saving control.......

Coal mining must follow scientific criteria

In recent years, due to the high energy consumption and coal demand in the coal chemical industry, the total coal production and consumption in China has continued to grow, with an average annual increase of about 200 million tons.......