Changsha Changsha County Hunan No.2 Testing Instruments No.4 Electronics Transformers No.6 Transformers No.9 Precision Instruments No.9 Lighting No.15 Security Electronics No.16 Jing Mi Ling Components No.22 Security Technology No.24 Power Equipment No.27 Industrial Control No.30 Power Supplies No.31 Security 专精特新小巨人企业 省级高新技术企业 科技型中小企业 省科技型中小企业 高新技术企业 企业技术中心 ISO9001认证 ISO14001认证