History
1988
Guo Flute MFG established by Geoffrey F. Guo
1989
Company renamed as Guo Musical Instruments Company (GMIC)
GF-2000, all sterling silver, soldered tone holes, handmade flute
1991
GF-1000 – Semi-handmade all sterling silver flute with drawn holes
1992
GF-5000 – Handmade all 14K gold flute
1997
Handmade all sterling silver piccolo
1998
Handmade all sterling silver alto flute
1999
Handmade all sterling silver D’amore flute
GF-X – silver handmade flute with soldered tone holes, the top series of GMIC’s range of handmade silver flutes
2000
DynaLance Headjoint
2003
Cermet Flute (now discontinued)
2004
Develop Grenaditte material
2005
Executer Headjoint
2006
Grenaditte C Flute
2008
Grenaditte Flute in G (GF201/GF301)
Grenaditte in alto saxophone neck
Grenaditte in clarinet barrel and neck
2009
NEW VOICE C Flute in range of four colors
NEW VOICE G Flute in range of four colors
2010
Grenaditte Piccolo flute
NEW VOICE Piccolo flute in range of five colors
2011
Grenaditte Tenor flute
NEW VOICE Tenor flute in range of five colors
2012
TOCCO flute
TOCCO flute in range of 12 colors