zhejiang zhongtian tools Co., Ltd is specialized in the production of the series of piercer products. The main products are wall piercer, alloy piercer, high-speed steel piercer, carpenter's alloy drill, carpenter's flat-wing drill, pack carpenter drill, pack carpenter's flat-wing drill, carpenter's spherical piercer, carpenter's alloy KOBATASHI adjustable piercer, common KOBATASHI adjustable piercer, high-speed steel KOBATASHI adjustable piercer, alloy lengthenin...
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