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easy maintenance rock drill bits
Selling leads
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... and higher impact frequency.The drilling speed is 15%-30% higher than the one with foot valve. 3.Simple structure, reliable parts, long life, easy ...
2025-08-02 00:23:34
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... frequency.The drilling speed is 15%-30% higher than the one with foot valve. 3.Simple structure, reliable parts, long life, easy and cheap ...
2025-08-02 00:23:33
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