Coal is plentiful raw materials in the world. It is sedimentary rock formed deep underground over thousands of years of heat and pressure. It composes mainly of carbon, hydrogen and oxygen. They are located under numerous layers of rocks and have to get it by coal mining, surface mining and underground mining.
Two common types of coal can be identified, bituminous and sub-bituminous. They have different ranking based on amount of carbon inside the coal and heat energy generated from the coal.
Bituminous coal contains higher level of carbon with lower moisture content. It can be subdivided into two category: Steam coal, used for power generation; and coking coal, used for manufacture of iron and steel.
Sub-bituminous coal includes lower level of carbon with higher moisture content. It can be used in cement manufacture and industrial uses.
Apart from their own usage, coal also performs important role as an ingredient in production of specialists products, like activated carbon used in filters for water; carbon fibre used in construction; silicon metal used to make lubricants and cosmetics.
Coal is the most common fossil fuel that can be used as source of energy. China is the largest producer and consumer of coal in the world. To lower the shipping cost, they will be crushed and removed heavy before transportation. With the latest clean coal technologies, the pollutants created to the environment have been greatly minimized. Therefore, the demand of coal remains high and stable which is favourable for our commodities trading business.