Printed circuit board (PCB) is a plate of dielectric material on which surface and/or volume electrically conductive circuits of an electronic circuit are formed. PCB is designed for electrical and mechanical connection of various electronic components. Electronic components on PCB are connected with their ends to the conductive pattern elements by usual mounting. RUSALOX produces standard MCPCBs and high thermal conductivity al oxide PCBs.PCB, based on al oxide technology, consists of conductive layers of aluminum and/or copper and dielectric material with nanoporous structure. The products manufactured by al oxide technology have successfully passed all the necessary tests (including tests of thermal reliability), and today we can safely say that al oxide products superior substitute products on the main consumer characteristics (the thermal conductivity is hundreds of times higher, the price is 20%-30% lower, the reliability is twice more). It is crucial that this technology is environmentally friendly, namely final products can then be easily disposed that distinguishes it from traditional MCPCB.