Which is better for pork modified atmosphere packaging machine?

The modified atmosphere packaging machine is dedicated to special planes, and the modified atmosphere packaging of pork is also divided into bacon/dry goods, cooked food/brine, fresh food and other categories. These categories all need different fresh-keeping gases for modified atmosphere packaging, and different fresh-keeping gases need different mixed gas configurations. For fresh pork, the proportion of O2 in the mixed fresh-keeping gas is 60%-75%, and the proportion of CO2 is more than 25%. The dual mixed gas system can effectively keep fresh and keep the meat bright red.