我公司常年经营钻井配件,出售各种型号新旧,三牙轮钻头，PDC钻头,油车大钩,钻杆,钻挺，钨粉，合金，吊嵌,吊卡，矿山钻头，公锥,组装三翼钻头,等石油水井钻采物资.常年高价回收进口,旧钻杆,钻挺,和报废三牙轮钻,PDC钻头,,希望更多朋友来电恰谈. Asks to buyOur company have long-terms buying some old three roller bits、 PDC drilling bits and others oil supplies....sell Our company sell different types of new/old three dental drill、PDC drill、drilling superscript、drilling pipe、drilling chain、drill collar、hanging clamp for a long time, which the goods we use in wells and oil drilling industry.