... Such as flute, piccolo, clarinet, saxophone, oboe, trumpet, Horn, trombone, tuba and so on. Each of them is produced by our ... our workers must accept training before entering our work-shop Tuba SeriesHTL-690Tuba 3 Rotary keys,BbHTL-691Tuba 3 piston keys ... rotary keys,BbHTL-6983 piston marching tubaHTL-699Compensation tuba,Bb/F keyHTL-699EEb tone tuba,cupronickel tuning pipe High Quality of Instruments ...