"ChengTan" rock drilling tools are made by Chengdu Prospecting Machinery Factory. It is the first specialized manufacturer of kinds of rock drilling tools. Its activities cover the research, design, test and production of rock drilling tools. The tools have been known for their excellent quality and high efficiency.
In 1998 the factory obtained the Quality System Certificate of ISO9002 Standards and was granted the certificate of 9000 Standards and International Standard Certification with...
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