タイトルまたは説明

Selling a variety models of, old and new roller cone bits, PDC drill bits, diamond drill bits and other drilling equipment, including elevators, tongs, drill pipe, drill pipe, rings, mud pump, etc..(Mainly used for oil drilling, gas exploration, water well drilling and underground construction)
In addition, we buy the old cone bits, the old PDC drill bits and the old diamond drill bits.

In addition, we provides  after-sales maintenance services.