Bonal International, Inc., through its subsidiary, Bonal Technologies, Inc., provides sub-harmonic vibratory metal stress relief technology in the United States and internationally. The company's products include Meta-Lax stress reliving equipment. It also offers consulting, training, program design, and metal stress relief services to various industries, including automotive, aerospace, mining, petroleum, shipbuilding, welding, machine tooling, plastic molding, racing, engine building, armament, and die casting. The company was incorporated in 1990 and is headquartered in Royal Oak, Michigan.