What does the production date of March 5, 2022 mean?

The cylinder manufacturing stamp on the cylinder cover of liquefied gas depends on the production date. According to the regulations, each liquefied gas cylinder must be stamped with a cylinder seal on its protective cover before leaving the factory. The bottle manufacturing information and various technical parameters have just been printed out in detail, including the production date, which is expressed in year and month. For example, March 2022 means that the cylinder was produced in March 2022.