Shanghai Optical Instrument Factory (<unk>上光<unk>) ee kɔc cɔl Shanghai Optical Instrument Factory (<unk>上光<unk>) ye kɔc cɔl Shanghai Optical Instrument Factory (<unk>上光<unk>) ye kɔc cɔl Shanghai Optical Instrument Factory (<unk>上光<unk>) ye kɔc cɔl Shanghai Optical Instrument Factory (<unk>上光<unk>) ye kɔc cɔl Shanghai Optical Instrument Factory (<unk>上光<unk>) ye kɔc cɔl Shanghai Optical Instrument Factory (<unk>上光<unk>) ye kɔ Kɔr kënë". Shanghai Optical Instruments 5 factories, 6 factories continue to produce optical measuring instruments; physical, analytical instruments, medical instruments, microscopes, teaching instruments and other six major categories - more than hundred occupies, as well as various optical lenses, special precision optical components, accessories and other. Shanghai Optical Instruments 5 factories, 6 factories continue to produce optical measuring instruments; physical, analytical instruments, medical instruments, microscopes, teaching instruments and other six major categories - more than hundred occupies, and various optical lenses, special precision optical components, accessories and other.