Ya zama ruwan dare ga welded carbon karfe bututu su sami iska kumfa a cikin walda, musamman manyan diamita carbon sumul karfe bututu weld pores ba kawai rinjayar da tightness na bututun walda da kuma haifar da zubar da bututun, amma kuma ya zama tushen shigar da lalata, wanda ya haifar da lalata. da gaske yana rage ...
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