Profile: McKenna Group specializes in manufacturing precision investment casting components. Our products include electronics components, bodies, chassis parts, valves, housings, adaptors, tubes, and connectors. We also offer finishing & polishing, refurbishment and casting design services. In our refurbishment service, we include typical methods like raw material evaluation, analysis and traceability, mechanical tests such as hardness, tensile, charpy impacts, non-destructive examination including X-ray, ultrasonic, magnetic particle inspection, and dye penetrant testing and metallurgical evaluation such as, metallographic examination of grain size & structure, plating thickness, and micro hardness.