Shandong RZ Drilling Tools Co., Ltd.is not only a professional manufacture of rotary drilling bits,coal mining bits,shield driving cutters and other kinds of construction tools,but also one of the largest cutter production bases in china.RZ products have been widely used in coal mine,geophysical exploration,tunnel,subway engineering,metallurgy,water conservancy project,highway projects and other projects. Furthermore, we have already got the certification of ISO9000:2000 and CE.Now RZ has won high praise of the customers at home and abroad by providing high-quality products, low price and satisfactory services,and also entered the overseas markets such as Japan, Korea,US, Brazil,Chile,Australia, Africa,etc. We lie in the No.7,Songhua River Road, Liaocheng Economic Development Zone, Shandong, China and enjoy the elegant environment and convenient transportation.Sincerely welcome friends both in and abroad visit us and your need is our pursuit and objective.