Plano-concave cylindrical lenses We employ some experienced engineers and technical personnel from chang chun institute of optics, fine mechanics and physics, which is part of the chinese academy of science. The number of workers has more than fifty people in our factory. According to your request we will try our best work for your company. Our fªstandardfª product line includes cylindrical lenses, lenses, plano-convex cylindrical lenses, plano-concave cylindrical lenses, spherical lenses, aspheric lenses, prism, filter, achromatic lenses and reflector