Tianjin Youfa Stainless Hlau Yeeb Nkab Co., Ltd. tau tsim nyob rau lub Kaum Ib Hlis 21, 2017, uas yog ib lub koom haum ntawm Tianjin Youfa Pipeline Technology Co., Ltd. nyob rau hauv Tianjin Youfa Steel Pipe Group Co., Ltd. Txij li thaum nws tsim, lub tuam txhab muaj tau cog lus rau kev tshawb fawb ...
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