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        Sprocket
        Front Idler
        Roller
        Supporting wheel
        Cutting & End Bit
        Front Fork & Tooth
        TESTING    
        鑄件澆注模擬軟件
        mould sand tester
        Vickers hardness t
        NDT tester
        three coordinates
        metalloscope
        spectrum
        impact tester
        temperature tester
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