NL Industries (formerly known as National Lead Company) is a holding company. Through its subsidiary, CompX International, it manufactures engineered components such as mechanical, electrical cabinet locks, and other locking mechanisms used in postal, recreational transportation, office and institutional furniture, as well as wake enhancement systems, stainless steel exhaust systems, gauges, throttle controls, trim tabs, etc. The company also owns a significant interest in Kronos Worldwide, a producer and marketer of titanium dioxide pigments that are utilized in a diverse range of customer applications and end-use markets, including coatings, plastics, paper, and other industrial and consumer markets.