I had purchased a set for strings from Amazon that were advertised as Dominant Strings. When I put them on they were not the same I had contacted the manufacture about possible fakes but to no avail. Then as I was commentating with another musician he told me how to identify fake strings from China. I never dreamed that someone would stoop that low. The strings from amazon just weren't right and I couldn't figure it out I thought it was me, so I practiced more ,hit did not help. So I purchased a set of strings from Concord Musical Supplies recommended by the other musician and my problem is solved. How wonderful to have people that are honest people of integrity that you can depend on and not have to worry about being deceived. Thank You Concord Musical Supply you now have another customer.