Is it illegal to pack oxygen?
Illegal. Oxygen packaging is illegal, and sales outlets that illegally operate oxygen, acetylene, argon and other filling gases have been investigated and banned, thus eliminating potential safety hazards in time. Oxygen is the most widely distributed element in nature, accounting for 48.6% of the earth's crust, and it is the most abundant element. In hydrocarbon oxidation, wastewater treatment, rocket propellants and breathing of animals and people in aviation, aerospace and diving.