Nitrogen As we all know, the air we breathe contains nitrogen and oxygen and other gases, nitrogen is usually a colorless and odorless gas, and generally nitrogen is less dense than air, nitrogen accounted for 78.12% of the total atmosphere, is the main component of air.

We all know that there is a kind of nitrogen on the market is bottled nitrogen and liquid nitrogen, a bottle of bottled nitrogen is about 50-70 yuan, and liquid nitrogen is calculated according to the kilogram. Both of these gases are expensive to use, so most people like to use nitrogen machines, especially Troy's nitrogen machines. Why? Because it is easy to use and preferential, after-sales service is good.