All of Di Zhao's instruments are made with careful attention to precision in their factory in Tianjin, China. The workers are all superbly trained directly by master flutemaker Di Zhao. The flutes are all padded with Pisoni pads, and all pads are shimmed like professional flutes. All instruments are made to achieve smooth key action, fast response, and excellent resonance.

Similar to the top professional flutes, the instruments are tested and adjusted in the United States by Di Zhao before being shipped to us. Handcut headjoints with undercuts and overcuts make the sound quality full and easy to play. All Di Zhao instruments are tuned to pitch A=442.  The wood for all Di Zhao Grenadilla instruments has been carefully selected, treated, and seasoned to resist changes in temperature and humidity.