I’ve done a lot a of reading on the various strengths, hyper, hypo, iso. But how they really work leaves me somewhat confused. I bought the Nebulizer and the saline for the mucus break up. The hyper may work better but there was one lung doctor’s review online which said he would never recommend 7%. He said the effect on your lungs is like putting salt on a snail. So that’s why research is very necessary. One one thing I do not like is that your product is made in China. I never saw this state...