So i noticed a lot of people like to go with the air venturi tanks. I also noticed they are priced significantly higher than some of the chinese brands. Such as tuxing, snowrain, acecare, etc.. Is the reason for this the DOT certification? I am seeing very affordable tanks that people dont tend to really bring up as much as air venturi. I was wondering if maybe manufacturing these at a cheaper price one day could be a good business venture or not. I have a lot of friends and family in China and India so it was making me wonder.