we are hejian zhankui drilling equipment co., ltd , spare parts compact was established in 1980.supplying tricone bits(new and renew),pdc bits, drill pipe, drill collar ,put together the long diameter bits and so on drilling equipment for petroleum & gas, water well ,mining and tectonic industries. only one of the manufacture of pdc bit and diamond core bit in our area. all the products have been awarded the iso9001 .it is a machining and trade company. we want to import the scraped pdc and junk tci from all over the world.

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