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.

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。

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National Oilwell Varco Inc shares are currently trading off about 1.9% on the day.

FORBES: Shares of NOV Now Oversold

Berkshire portfolio shows two new positions Phillips 66 ( PSX) and National-Oilwell Varco, Inc ( NOV).

FORBES: Latest Picks From Warren Buffett: NOV, WFC, IBM, DVA, BK

National Oilwell Varco Inc shares are currently trading up about 9% on the day.

FORBES: National Oilwell Varco Inc (NOV) Shares Enter Overbought Territor