Tam sim no, steel qhov chaw tiv thaiv kev tshawb fawb semi-graphitization carburizer ua lag luam, nrog Performance index C≥98.5%, S≤0.3%, particle loj 1-5mm semi-graphitization carburizer ua piv txwv, tus nqi tseem ceeb ntawm 3600-3800 yuan / tuj (suav nrog tax factory). Spot kom muaj nuj nqis yog nruj thiab cov nqi txuas ntxiv ...
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