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Nitrogen (N₂) is one of the main components of air, accounting for approximately 78% of the total Earth's atmosphere. It is a colorless, odorless, and tasteless inert gas with stable chemical properties that is not easily reactive with other substances. In industrial production, nitrogen is often used as a protective gas, such as in welding, cutting, and food packaging processes, to prevent oxidation and corrosion caused by oxygen. In addition, nitrogen is also used in the manufacture of fertilizers, synthetic fibers, and as a refrigerant for freezing and refrigeration. Due to its inertness, nitrogen is also commonly used as an inert atmosphere in laboratories to protect sensitive substances from the influence of air.
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Helium (He) is a colorless, odorless, and tasteless rare gas with extremely inactive chemical properties. It is the second most abundant element in the universe, but its concentration in the atmosphere is extremely low. Helium has extremely low density and melting point, as well as high thermal conductivity, making it widely used in scientific research, industry, medical and other fields. For example, in superconducting technology, liquid helium is used to manufacture superconducting equipment; In the field of diving, helium is mixed with oxygen to improve the safety and efficiency of diving operations. In addition, helium is also used for welding protection, balloon inflation, magnetic resonance imaging, and other purposes.
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Qingdao Guida Special Gas Co., Ltd
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Address: 112 Shuangyuan Road, Chengyang District, Qingdao City, Shandong Province
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