结果来自
KUNSHAN HIGRED TOOLS CO.,LTD
中国
HEJIAN HUANYU PETROLEUM MACHINERY CO., LTD.
SHANDONG TOPS PDC BIT CO., LTD
CANGZHOU GREAT PDC BITS CO.,LTD
HUANYU PETROLEUM MACHINERY CO., LTD.
KLT CARBIDE CO.,LTD
DEZHOU DARONG MACHINERY CO., LTD
SHANDONG SILVERSTONE ROCK DRILLING TOOLS CO,LTD.
UBU FLANGE AND FORGING LIMITED
HEBEI ZANKHUI DRILL EQUIPMENT CO. LTD.
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