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            中間包整體承包

            Sum Contract of Tundish Refractories


            承包范圍:中間包永久層澆注料,工作層鎂質干式料、涂抹料,中間包快換定徑水口、定徑水口快換裝置,塞棒、鋼包長水口、侵入式水口,沖擊板、穩流器、座磚等

            欧美激情A片一区二区三区

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