Tam sim no cov fittings nyob rau hauv kev lag luam feem ntau siv forging txoj kev, DHDZ muab zoo forgings, yog li tam sim no thaum forging, dab tsi raw cov ntaub ntawv siv? Cov ntaub ntawv forging feem ntau yog carbon hlau thiab hlau alloy, ua raws li txhuas, magnesium, tooj liab, titanium thiab lawv cov alloys. Thawj lub xeev ntawm ...
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