久爱在线中文在观看直播

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            Qualification Certification

            ISO9001 quality management system authentication certificate
            ISO9001 quality management system authentication certificate


            Group member of Chinese Society for Corrosion and Protection
            Group member of Shanghai Society for environmental protection
                 The honor sponsorship unit of Sixteenth World Corrosion Convention
                 The honor sponsorship unit of Fourteenth Asia-pacific Corrosion Control Convention
                 Group member unit of Thermal spraying speciality committee of ChinaSurface engineering institution
                 The sponsorship unit of China Corrosion and Protection Knowledge scientific activities(2007)
            久爱在线中文在观看直播
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