Semikron was established in Germany in 1951. Semikron is one of the leading companies in the world in terms of power electronics, standard power semiconductors and custom made solutions and systems with 3600 employees, headquarters in Nuremberg/Germany and production facilities in Germany, Brasil, China, France, Italy, Korea, Slovakia, South Africa and USA.

Hitachi was established in Japan in 1910. Hitachi is one of the leading companies in the world in various fields such as information and telecommunication, power and rail transit systems, heavy construction equipments, electronic systems and devices, advanced materials and components, automotive systems, digital media and consumer products with 32,926 employees and headquarters in Tokio/Japan.

ZE LAMINA S.A. was established in Poland in 1957. Lamina with their headquarters in Piaseczno/Poland delivers products to Europe, Far East Asia and North America. Lamina provides innovative and efficient solutions in the fields of power semiconductors and microwave tubes by running applied Research-Development projects cooperating with Technical Universities and research centers since established.

Proton-Electrotex was established in Russia in 1996. Proton-Electrotex with their headquarters at Russia delivers products to 44 countries all over the world. Proton-Electrotex produces high quality diodes, thyristors and power modules at modern production facilities by means of running projects over semiconductors at their Research-Development center in Russia.