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Photonics Buyers' Guide / GB Group Inc.
PO Box 2293
New York, NY 10021
United States
Phone: +1 212-594-3748
Fax: +1 212-594-3872
Supplies scintillation crystals (CsI(Tl), CsI(Na), NaI(Tl), BGO); nonlinear optical crystals (KTP, KNbO3); laser crystals (Nd:YVO4, Nd:YAG); optical crystals (CaF2, BaF2, MgF2, ZnS, ZnSe); nanometer diamond powder, CVD diamond; CZ crystals, polycrystalline zirconia; optical quartz; and erbium-doped glass.
Established: 1996
Ownership type: Privately Owned

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