CERTIFICATE

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AWS Welder—Fu Tian

AWS Welder—Zhizhong Wu

AWS Welder—Hongqing Wu

AWS Welder—Yuying Xiang

AWS Welder—Xiushui Xu

AWS Welder—Guilin Yu

AWS Welder—Zhicheng Yu

AWS Welder—Jinzhong Yu

AWS Welder—Tianchu Zhang

AWS Welder—Tingquan Zhang

AWS Welder—Xiaoman Zhou

AWS Welder—Xiaoyun Zhou

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