2026-03-29

Gwv pom PDC Bit 8 1/2 Inch with 5 Blades: A Key Component in Oil and Gas Drilling.

Yog li ntawd, peb yuav txiav txim siab ntso, ces peb yuav ua rau peb sijhawm. Muaj ib zaj no yog phau PDC (Polycrystalline Diamond Compact). Tsis tas li ntawd xwb. Lawv txib puas hnyav