Zheleznodorozhnaya, 24
thermocouples,silicon carbide,ligatures,sapphire watch crystals,sapphire rods,sapphire plates,x-ray tubes,sapphire watch glass,diffusion tubes,consoles,wafer boats,carriers,sapphire tubes,thermoelectric transducers,refrectory ceramics,resistance transducers,metal-ceramics,molybden monocrystals,coatings,welding of refractory metals