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Changsha Furong District Hunan New Materials Materials Technology Huan Bao / Energy Saving Jin Shu He Gold Anti-corrosion Technology Gong Cheng Yan Jiu Center Plain Oil He Gold Materials Circular Economy Hai Yang Jing Ji Ocean Engineering Wu He Gold国家重点新产品国家技术发明奖高新技术企业科技型中小企业省科技型中小企业省级创新型中小企业