Tianjin Minjie Steel Co Ltd., oo la aasaasay 1998, ayaa ku xardhay suuqa adduunka oo dhan oo leh alaab tayo sare leh iyo tubooyinka birta. Shirkaddu waxay ku takhasustay tuubooyinka birta ah ee hore loo galvanized, tuubooyinka galvanized kulul, tuubooyinka birta alxanka, iyo tuubooyinka square iyo leydi. Waxaa ka mid ah...
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