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Clay-wares; Manufacture of porcelain or white ware of porcelain for electrical insulation
Glaze for a ceramic article
#2Friable-resistant dielectric porcelain
#3Friable-resistant dielectric porcelain
#4THERMAL ACCUMULATION-TRANSMISSION PANEL AND THE PROCESS FOR OBTAINING IT
#5Method of producing low soda alumina, low soda alumina produced by the method and method of producing porcelain