CUG ZHONGYI TECHNOLOGY DEVELOPMENT CO,.LTD is a professional rock drilling tool R&D and manufacturing company in central China??s Wuhan city, Hubei Province. Our main products are various ranges of integral drill steels, tapered rock drilling bits, thread rock drilling bits, extension rods, shank adapters, coupling sleeves and down-the-hole equipments (hammers, bits, tubs and fittings) which are widely used in rock drilling engineering such as mining, hydroelectric engineering and tunnel excavation. Stable and high Quality is our first consideration. We carefully choose our raw material suppliers and randomly audit their quality systems. ZhongYi has his own system control systems not only meet the requirement of ISO9001 but also trying our best to meet SIO14000 in the near future. Please contact us at or visit our website: or fax us at:86-27-8759 6941

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