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เพชรแกนสว่านบิต

เราขุดเจาะปิโตรเลียม PDC บิต/ น้ำมัน สำรองแก๊สสว่านบิต ซึ่งทั้งหมดใช้สำหรับเจาะ oilfield เมื่อเทียบกับบิตเนื้อเหล็ก ตัวเมทริกซ์ได้เหมาะสำหรับฮาร์ดร็อค และอายุการใช้งานบิตเป็นสองเท่ากว่าเนื้อเหล็ก


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