NL Industries, Inc., through its subsidiary, CompX International Inc., engages in the manufacture and sale of security products, precision ball bearing slides, and ergonomic computer support systems. Its security products include locking mechanisms and other security products comprising disc tumbler locks, pin tumbler locking mechanisms, and eLock electronic locks used in various applications, including ignition systems, mailboxes, vending and gaming machines, parking meters, electrical circuit panels, storage compartments, and office furniture. The companys precision ball bearing slides and ergonomic computer support systems comprise integrated slide locks, adjustable ball locks, self-closing slides, articulating computer keyboard support arms, CPU storage devices, and complementary accessories used in computer-related equipment, appliances, tool storage cabinets, imaging equipment, file cabinets, desk drawers, and automated teller machines applications. It also manufactures and distributes marine instruments, and hardware and accessories for performance boats, which are used to operate in corrosive marine environment.NL Industries, through its other subsidiary Kronos Worldwide, Inc., produces and markets titanium dioxide pigments, which are used for imparting whiteness, brightness, and opacity to customer applications and end-use markets, including coatings, plastics, paper, and other industrial and consumer products. In addition, the company provides insurance brokerage and risk management services. It sells its products to original equipment manufacturers and distributors in North America and Taiwan. The company was founded in 1891 and is based in Dallas, Texas. NL Industries, Inc. is a subsidiary of Valhi, Inc.