Product Evaluation Systems (PES Inc.) is an independent testing laboratory, specializing in mechanical, metallurgical, chemical and nondestructive testing and analysis. The company has been in business since 1979 and has grown over the intervening years to its present staffing complement of 15. The company moved into larger premises in 1996. The new building, located 30 miles east of Pittsburgh on the outskirts of Latrobe in Unity Township, has over 15,000 sq. feet of laboratory, machine shop, high-bay and office space.