Industrial gases can be divided into two categories based on their preparation methods and application fields: bulk gases and special gases. Bulk gases mainly include air separation gases such as oxygen, nitrogen, argon, and synthetic gases such as acetylene and carbon dioxide. This type of gas has a large production and sales volume, but generally has low requirements for gas purity. It is mainly used in traditional fields such as metallurgy, chemical industry, machinery, power, shipbuilding, etc.
The main products of bulk liquids are: liquid oxygen (LO2), liquid nitrogen (LN2), liquid argon (LAr), and liquid carbon dioxide (LCO2)
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