1.Material:H-K9L; 2.Dia.=12-0.03/-0.08mm; 3.power=5; 4.Irri.=0.5; 5.Centration=0.03mm Changchun Baitai Optics Co., Ltd. is a high-tech Company specialized in optical design,research and development, manufacture, sale, and technique consultation services. Plant area 1500 square meters.Registered capital 2,000,000 YuanThe company existing optical design, the product research and develop expert 6, ...