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Personne àcontacter Ms. vivi
Huanghe, Zhengzhou, Henan
Mainly used for underground anchor bolt supporting work and hard rock drilling; According to the drilling rock rank, we could make common drill bit and elaborate kind ; whole and half ;single water exit and three kind. Size : *5mm, *6mm, *7mm, *8mm, *9mm, *0mm, *2mm, *6mm, *8mm, *2mm.
