No.54 Qingdao Popularity Ranking No.13 Laoshan District No.187 Shandong No.1 City Gas No.1 Shu Zi Luan Sheng No.1 Gas No.1 Water Engineering No.1 Control Equipment No.1 Water Safety No.1 Testing Equipment No.1 Packaging Materials No.1 Shui Li Shui Dian No.1 Water Construction No.1 Emergency No.1 Shui Zi Yuan 理事单位 高新技术企业 企业技术中心 绿色工厂 专精特新小巨人企业 国家知识产权示范企业 ISO9001认证 ISO14001认证 OHSAS18001认证