Every manufacturer makes flutes made of mottled bamboo. In the past, mottled bamboo was very common in old flutes. My teacher is over 60 years old, and he owns a few flutes, but they were all bought when he was young. I saw Bazhu's flute in a musical instrument store 5 years ago. It seemed to be from Lingyin Instrument Factory. It's been so long that I can't remember it clearly. I haven't visited a musical instrument store much in the past two years, so I don't know for sure. Nowadays, flutes have been improved, and there are many mahogany and ebony ones. If you really want to buy Bamboo, you can go to a musical instrument store to check. If you don’t have any, call the musical instrument factory and ask. If you don't have a special liking for Bamboo, a good timbre and high pitch will be enough, right?