NEW PORCELAIN MATERIAL FOR THE MANUFACTURING ELECTROINSULATING PRODUCTS BY ISOSTATIC PRESSING METHOD Journal title: Proceedings of Electrotechnical Institute Prace Instytutu Elektrotechniki Authors: Tadeusz RUZIEWICZ, Beata ZBOROMIRSKA – WNUKIEWICZ, Artur SŁAWIŃSKI, Janusz OLEJNIK Subject(s):