Guiyang Yuanshan Drilling Equipment co,.ltd also named as YSDRILLING,which is located in the southwest of China.YSDRILLING manufacture tricone rock bits and diamond core drilling tools suitable for use in a wide range of geological formations,from soft soils to the hardest rocks. With many years experience in drilling industry,YSDRILLING is becoming more and more familiar to all customers throughout the world.
يکشنبه 14 فروردین 1390
2011/4/3
Hit :1645
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