... designed, produced and purchased by Zhengzhou Songshan Industry Filns&furnaces Co., Ltd. specifically, the manual is adapted to ... carbide, graphite carbonization.2. Company Zhengzhou Songshan Industry Kilns &furnaces Co., Ltd. specializes in the design and manufacturing of ... temperature of 200-2500 degree C, widely used in electronic ceramics, porcelain and ceramics, rare earth chemicals, refractories ...