Office in Rockford, IL
Sub Source, Inc. provides metal finishing, coating, and nondestructive testing services from its Rockford, Illinois facility. Its NDT services include liquid penetrant inspection, magnetic particle inspection, and Nital Etch for parts used in aerospace, agriculture, automotive, construction, defense, energy, machine tool, power generation, recreational, and technology sectors. The company was founded in 2000 and is led by President Stan Valiulis.