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Warehouses The function layout and communication requirements of box house in temporary command center and emergency dispatching center are discussed.
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Steel Pipes ASTM 1′ 2′ 3′ 4′ 5′ 6 8′ 10′ 12′ 14′ 16′ Sch40 Sch80 A53 A333 A106 St45 Sch40 DN15 Q235B Q355b B级热轧Gr. B管碳素无缝钢管