Inorganic chemicals;�inorganic or organic compounds of precious metal, of radioactive elements, of rare earth metals or of isotopes hydrides, nitrides, azides (azides), silicides and borides, even if they are not of defined chemical constitution, except those compounds that also consist of carbides
Inorganic chemicals;�inorganic or organic compounds of precious metal, of radioactive elements, of rare earth metals or of isotopes hydrides, nitrides, azides (azides), silicides and borides, even if they are not of defined chemical constitution, except those compounds that also consist of carbides