Almglocken and Thai gongs have a different notation then what is starndard. Please be careful when ordering specific pitches. Standard Music Notation is that Middle C (C4) = C1 Almglocken. So if you have a ‘F4’, bottom space on treble clef that would be ‘F1 Almglocken’.
Almglocken Notation PDF
Thai Gongs just like the Almglocken, Middle C4 on standard notation, is C1 for Thai Gongs. Our Middle Octave C1-C2 is actually Middle C4-C5.
Thai Gong Notation PDF