Our enterprise since its inception, usually regards product high quality as business life, repeatedly enhance manufacturing technology, make improvements to product excellent and continuously strengthen enterprise total high quality administration, in strict accordance with all the national standard ISO 9001:2000 for FM UL CERTIFICATE, CHINA FAMOUS VALVE BRAND, 8.5" tricone bit IADC437, NBR SEAT CHECK VALVE,button bit IADC417. We welcome new and previous clients from all walks of lifestyle to get in touch with us for long term business relationships and mutual accomplishment! The product will supply to all over the world, such as Europe, America, Australia,Nigeria, Doha,Tunisia, Mauritius.We'll continue to devote ourselves to market & product development and build a well-knit service to our customer to create a more prosperous future. Please contact us today to find out how we can work together.