We provide cored drill bits with multiple types of segments by laser welding/ brazing, to compete with international brands like HILTI, EHWA with premium diamond grain and cobalt-reinforced bonding, designed for dual application of concrete,brick & asphalt in high speed and long durabity.
A cold press sintered diamond grinding cup wheels with big turbo sgement in cheap cost and high efficiency, designed for grinding concrete,brick, stone and metal surface , etc.,
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