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ASTM A 106 Bakar Carbon Bakin Karfe Ba don aikace-aikacen sabis na zafin jiki iri-iri
A Botop, muna alfahari da kasancewa reshen Hebei allland Steel Tube Group na duniya, kuma muna da nau'ikan bututun ƙarfe iri-iri don biyan buƙatun abokan ciniki....Kara karantawa
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