Changsha Changsha County Hunan No.14 Smart Construction No.16 Hardware R&D No.18 ODM No.27 Audio Video Technology No.39 Zhao Bidding No.56 Smart Transportation No.59 Cheng Shi Xin Informatization No.69 Dai Processing Hardware Safety Management Zhi Hui Cheng Shi Communication Technology AAA级信用企业 高新技术企业 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 省级高新技术企业 省科技型中小企业 实用新型专利 省级创新型中小企业 软件著作权 理事单位 ISO9001认证 ISO14001认证 QC080000认证 OHSAS18001认证 RoHS认证