A leading provider of nondestructive testing (NDT) and inspection services throughout the Gulf Coast for over 45 years, Capitol Ultrasonics was acquired by the company in 2016 and is now Premium Inspection and Testing Group – Capitol Division.  

Based Baton Rouge, LA, Capitol Division's facilities include locations in: Gonzales, LA and Lake Charles, LA

Established in 1977, Premium Inspection & Testing Group's QCTL Division (previously known as Quad City Testing Laboratory, Inc.) was acquired in 2015 and provides superior nondestructive testing and inspection services as well as crane and material handling equipment inspections and training to clientele as diverse as aerospace, nuclear power generation, agricultural and ordinance.

Based Davenport, IA, QCTL Division's facilities include locations in: Lombard, IL, Waterloo, IA and Plant City, FL.

Acquired together with the QCTL Division in 2015, Premium Inspection & Testing Group's QCC Division (previously known as Quad City Calibration) is a registered industrial gage calibration organization providing the highest in quality services with the convenience of rapid turnaround. QCC embraces the strictest of quality control programs for all aspects of the organization. Its calibration and reference standards are traceable to the National Institute of Standards and Technology (NIST) and consistent with the physical principles for linear traceability.

Based in Davenport, IA, Premium Group's QCC Division is co-located with the QCTL Division. 

Acquired in 2018, Quality Testing Services, Inc. has been providing critical nondestructive testing, inspection, safety and asset integrity services to clients throughout a broad scope of industries for more than two decades. Wherever the need, Quality Testing provides reliable, expedient, and cost-effective nondestructive testing and inspection services in a professional manner. In addition to its NDT services being NADCAP accredited andapproved, the company is also a FAA Part 145 Repair Station and holds many other licenses, approvals, and accreditations. As an authorized ASNT examination center approved to administer IRRSP and Level 3 Exams, Quality Testing Services’ expert NDT training and consulting services are designed to qualify and prepare candidates for certification in accordance with SNT-TC-1A, NAS 410, CP-189, MIL-STD and/or customer guidelines. Being a leading Nadcap™accredited, nondestructive testing laboratory, Quality Testing Services provides a full range of ISO/IEC 17025:2017 A2LA accredited calibration services, including; NDT Test Equipment, Physical Dimensional, Torque, Temperature, Pressure, Electrical DC/Low Freq., RF/ MW, Balances and Scales, Mechanical, and Light. 

Based in the St. Louis, MO area of Maryland Heights,  Premium Group's QTS Division's facilities include a main campus and calibration lab.