No.318 Changsha County Popularity Ranking Changsha Hunan No.3 Construction Energy Saving No.7 Heat Insulation No.10 Jie Neng Jian Pai No.19 Building Materials No.40 Materials R&D No.47 Construction No.54 New Materials No.83 Huan Bao / Energy Saving Xin Xing Construction Materials Lamination Boards Glazed Hollow Beads Lamination Boards Materials 科技型中小企业 省级专精特新中小企业 专精特新小巨人企业 省科技型中小企业 高新技术企业 省级高新技术企业