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Haian County Educational Optical Lens Factory specializes in the development, production, and processing of colored optical glass and special glass. Main products include UV glass, infrared glass, color temperature conversion filters, heat-insulating glass, bandpass filters, ND filters, borosilicate glass, quartz glass, B270, UV filters, polarizers, and over 100 types of optical components, widely used in photographic equipment, instrumentation, optical instruments, medical, infrared and other fields.