The Official Buying Guide for Salons & Spas. A division of tng worldwide (TNG), The Industry Source is a team of professionals delivering solutions and experiences that inspire beauty. The Industry Source is the worldwide leader in providing professional nail, hair, spa and tanning products and superior service to the salon, spa and beauty industry. TNG facilities include two Michigan distribution centers, a California distribution center, and 20 store locations. Powered by SAP, TNG is a 6-time winner of Metropolitan Detroit’s 101 Best and Brightest Companies to Work For, winner of the Detroit Free Press’s Top Workplaces 2008, and a 5-Star Investor for the American Cancer Society.