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small water drill drill bit core (method for rhinestone drill bit)

Summary: 阿里巴巴水钻头63空调钻混凝土石材开扩孔器取芯水钻机专用钻头正品,钻头,这里云集了众多的供应商,采购商,制造商这是水钻头63空调...

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20181113 chifeng drilling core machine manufacturer 1 when a card diamond occurs, it is not allowed to use a way for forced starting machines to exclude cartridges, and the artificial method should be used to remove the drill bit with extended handle. no water or less water drilling 4 press and hold the fast button to make the drill bit close to the specimen, then according to the hard soft selection of the test piece. the corresponding drilling speed is slow. 5, the sample button is automatically sampling.

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