Last year, NPK International Inc generated 124.17M USD for its biggest-performing segment, Rental revenues. The United States made the largest contribution, accounting for 258.69M USD last year. For the latest quarter, NPK International Inc reported the revenue of 37.21M USD for the period ending 2026-06-30, which came from the top-performing segment, Rental revenues. United States contributed the highest revenue, at 71.53M USD.