NHG is located in high-tech industrial development zone of Xiangfan city, Hubei province,  and covers 108600 square meters, in which 36400 square meters are construction area for production. NHG is high-tech enterprise of Hubei province and  key State Torch Program enterprise. NHG produces 4800 tons optical glass, 100 million secondary pressing parts, 1500 kilograms special optical materials per year.