Ventilating Needle Kit Holder 4 pcs Ventilating Needles 1-1 1-2 2-3 3-4 for Making Lace Wig toupee customized private label

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  • 20100814130306 5754551

    2021-7-20 · PCBN inserts for turning cast iron and hardened steel: pcbn is the second hardest material in the world, and cbn related high precision cutting tools are introduced to industry, achieved high productivity and cost reductions. pcbn is the short name of polycrystalline cubic boron nitride, and pcbn inserts are mainly for the hard metal turning to replace the conventional machining way of grinding.

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