?Newritte Rock Drilling Tools CO.,LTD , is a high-tech corporation ,located in Liaocheng ,Shandong Province .?? We are specialized in the researching and manufacturing of coal mining bits ,rotary bits ,rock drilling tools ,mining tools and construction tools , which are widely used in mining excavating ,metallurgy , and other industry .Since its establishment in 2001, our professionals developed most technologically advanced rock drilling tools in the market , thus make us as a trend-setter in our industry . Our products has obtained ISO 9001:2000 quality systerm certification.With the principles "quality first ,the good faith " welcome all kinds of cooperation including technical collaboration .,new products developing and processing according customer's samples .
