Being supported by an highly developed and skilled IT group, we could offer you technical support on pre-sales & after-sales support for drag bit supplier, DEMCO VALVE, api drilling bit 7.5", HDD drilling bit,tricone drilling. We are looking forward to receiving your enquiries soon. The product will supply to all over the world, such as Europe, America, Australia,Brasilia, Uganda,UK, Germany.Our Company policy is quality first, to be better and stronger, sustainable development . Our pursuit goals is for society, customers, employees, partners and enterprises to seek reasonable benefit. We aspirate to do cooperate with all different the auto parts manufacturers, repair shop, auto peer , then create a beautiful future! Thank you for taking time to browse our website and we would welcome any suggestions you may have that can help us to improve our site.