Hunan jinwei new material technology co., ltd.（GNT） was established in July 2008 ,GNT is one of National Hi-tech leading company fine and complex steel profile research and development, manufacturing and steel profile doors and Windows, curtain wall system research and development,Design, manufacturing in one of the national high-tech enterprises. The company's high-end brand, the company began to develop advanced precision and complex molding technology in the steel industry in 2010 ,I have successfully mastered fine steel profile technology from equipment, mold, application and crystal control All the core technologies of the four systems,are mainly produced at present Production of fine steel profile curtain wall (fire) system, fine steel profile doors and Windows (fire) system.