Corefficient designs, manufactures and markets energy efficient electrical cores; a major component used in the manufacture of dry-type and liquid-filled transformers. Based out of Monterrey, México, the joint venture between Hammond Power Solutions and National Material brings the right mix of people, technology and financial strength to create a Competitive Advantage for our Customers; through Electrical Transformer Cores that consistently meet their Quality, Delivery and Value expectations.The state-of-the-art facility will fulfill the market's needs to meet new U.S. Department of Energy efficiency regulations (DOE 2016), for both DGC's as well as Full Miter cores. Our goal is to become the Leader of the Electrical Transformer Core Market by consistently fulfilling the needs of Customers, through Operational Excellence and Product Innovation. We look forward to building a new legacy of value to the core.