

Chemical Engineering
The chemical industry includes departments such as chemical engineering, oil refining, metallurgy, energy, light industry, petr…

Oil
The petroleum industry is an industrial sector that involves the extraction of petroleum (including natural petroleum, oil shal…

Natural gas
Valves are indispensable important equipment for the safe operation, maintenance, renovation and development of gas distributio…

Electricity
A power station is a factory that converts various primary energy sources contained in nature into electrical energy (secondary…

Metallurgy
The metallurgical industry refers to the industrial sector that involves the extraction, selection, sintering of metallic ores,…

Papermaking
Papermaking technology is divided into two forms: mechanical and manual. The mechanical method is carried out continuously on a…