国民油井华高（NOV）是世界石油天然气工业领域的领导者，在过去的140多年里，一直专注于提供最高质量的油田产品及服务。国民油井华高是所有钻采设备、集成系统、井下工具及供应链解决方案的单一来源。从一个备件到一套完整钻井系统，从一个普通的阀门到一套集成的供应链程序，国民油井华高提供各种无限制的用户解决方案。为更好地服务于未来客户需求，通过不断地开发和获取新的技术和服务，国民油井华高将继续在世界范围内成为各类产品及服务的最出色来源。 格兰特（江苏）钻具有限公司是国民油井华高所属的一家全美资公司。格兰特公司在钻柱技术和生产以及在钻头技术和生产方面一直处于全球领先地位。同时也是全球最主要的高性能钻杆供应商之一。 National Oilwell Varco is the leading provider for the worldwide oil and gas industry and has been dedicated to providing the highest quality oilfield products and services for more than 140 years. National Oilwell Varco is the single source for all of your rig equipment, integrated systems, downhole tools, and supply chain solutions. From a spare part to a comprehensive drilling system and from a generic valve to a fully integrated supply chain process, National Oilwell Varco delivers unlimited customer solutions. By constantly developing and acquiring new technologies and services to better serve future customer requirements, National Oilwell Varco will continue to be the premier source for diversified products and services worldwide. Grant Prideco (Jiangsu) Drilling Products.Co., Ltd is wholly owned subsidiary of NOV Grant Prideco is the world’s leader in drill stem technology and drill pipe manufacturing, a global leader in drill bit technology and manufacturing, and a leading provider of high-performance engineered connections and premium tubular products. 有关公司详细介绍，请访问我们的网站：www.nov.com