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          石油天然氣行業


          昌潤超硬材料的金剛石石油片是采用金剛石微粉與硬質合金基片在超高壓高溫條件下燒結而成,
          既具有金剛石的高硬度、高耐磨性與導熱性,
          又具有硬質合金的強度與抗沖擊韌性,適用于石油天然氣鉆探開采。



          清纯白丝学生脱裙子自慰
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