Bonal International, Inc. operates as a holding company, which engages in the provision of sub-harmonic vibratory metal stress relief and weld conditioning technology. It manufactures Meta-Lax stress relieving, black magic distortion control and pulse puddle arc welding equipment. It also provides consulting, training, program design and metal stress relief services to several industries including: automotive, aerospace, shipbuilding, machine tool, plastic molding and die casting. The company was founded on August 17, 1990 and is headquartered in Royal Oak, MI.