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medium steel 中硬鋼。

medium wave

Wuyi company , has become a marketing 50 , 000 tons of steel and sales amounting to nearly 200million medium steel trading company in the country with a high reputation in the industry 武夷公司現已成為一家年銷售鋼材5萬噸,銷售額達近2億的中型鋼鐵貿易公司,在國內同行業中具有較高聲譽。