Self Drilling Anchor Rock Bolts, Threaded Rods ...
2020-3-14 · Metis has an integrated and critical quality control system. We have over 5000㎡ and 8 anchor bolt production lines. The most professional manufacturer of self-drilling anchor bolt. Metis has pass the certification finally in March 9, 2015. Metis pays high attention to environment protection, culture construction, philanthropy and so on.
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