Profile: Nanjing Intane Optical Engineering Co., Ltd. is a manufacturer of customized precision focuser, apochromatic and optical lens. We are an ISO 9001:2000 certified company. Our products include apochromatic refractors, optical lens, telescope mirrors, apochromatic lens, telescope mirrors and optical components. We are specialized in specific, high precision optical components as well as complex, optical, and optoelectronic systems. Apochromatic lens is a high performance lens designed for telescopes used with eyepieces. We supply a wide selection of these lenses from medium to large size. Our ED apochromats are made of two very high homogeneity ED glasses having full multi-coatings on all required surfaces, a fully temperature compensated lens cell, and zonal correcting non-equal internal radii.