H.J.Photoelectron Co. Ltd is the leading manufacturer in northeast of china,now mainly we are exporting optical components and optical instruments parts such as lenses, prisms, waveplates, windows, mirrors, reflectors, objectives and eyepieces etc.The materials are widely used BK7, Fused silica, CaF2, ZnSe, etc. The our manufacture ability that we can make the surface accuracy up to 0.05 lambda, surface quality less than 10-5, dimension from 10mm to 300mm.Anyway if you want to know more about my company,please visit our website.If there is any interest to you,please feel free to contact me.Your prompt reply will be highly appreciated.