Band-Optics Technology - Nanjing, ChinaBand-Optics primarily fabricates high-precision off-axis parabolics, toroids, aspherics and spherical lenses, domes, prisms, filters, and flat windows by using optical-grade glasses, fused silica, sapphire, ZnSe, ZnS, Silicon, Ge, CaF2, Zerodur, and Aluminum. We serve OEM, defense, aerospace, semiconductor, medical, and bio industries worldwide.