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hammer and bit dth drilling equipment

putian qideli drilling tools company was founded in 1990, is specialized in the production and operation of mining drilling tools, research and development-oriented enterprises. 28 years, the production of chisel-bits, cross-bits, button bits, thread bits, pdc bits high and low air pressure dth bits, dth hammer, drill rods, etc, are widely in energy, metallurgy, geology, coal, water

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