Guizhou Sinodrills Equipment Co.,Ltd. is a specialized rock drilling tools manufacturer and exporter. From its establishment, our products had been exported to 72 countries all over the world till 2010.We are dealing with rock drilling tools for mining, quarrying, tunneling and well drilling for many years, Our main products are top hammer drilling tools (button bit, tapered bit, integral drill rod, extension rod, drifting drill rod, etc.), DTH drilling products (DTH hammer, DTH bit, DTH rod, etc.), diamond core drilling tools (diamond core bit, Core Barrel, Overshots, Coring Drill Rods etc.), step drag bit, chevron drag bit and self drilling tools. Also we can design by customer’s requirement, if you need more information, please enter our website www.sinodrills.com or keep free to contact with us.