The materials/chemicals:

(a) the purities such as tech grade, 2N, 3N, 4N, 5N, 6N,
(b) sizes from micro-, submicron-, nano particle/powder to mm grain,
(c) crystalline and amorphous,
(d) porous/hollowed/hole materials, meshs,
(e) different cation valences/off stoichiometry in oxide,  sulfide, telluride etc.
(f) dopant options,
(g) sintered/fused pieces, tablet, target, metal/alloy foil/sheet, plate, wire/rod/tube, part etc.

(h) intermediate alloys;

(i)  paste, dispersion/sol;
(j) mono-crystal of semiconductor compound, oxide, fluoride and some metal and
(k) their wafer (epi-) and substrate
(l) some other related materials/chemicals for your R&D & industrial supply.