At cecilia musicWe are company that run by musician so that we know the quality of products.There are plenty of manufacture that produce wind instrument. Some are of great quality and price but inconsistant with there output.We already selected instrument from many manufacture that are of good quality and very consistantWith there quality control.There factory have been making instrument for big brand so that you can always rely on the quality of our instrument.Please contact us, we would be please to answer all your questions.