Our company exploits the mine of high purity quartz in Russia, Ural. We sell this quartz in Russia and to different countries. Our quartz is the very high quality ( min 99,98 % SiO2). The impurieties contents of some components: Ca - 10 ppm, Fe - 20 ppm, Ti - 10 ppm, Al - 20 ppm, Na - 30 ppm, K - 30 ppm, Mg - 7 ppm. Exact composition confirmed by the certificate on the demand. On the order higher cleanness e.g. IOTA 4. Also we offer fertilizers ( urea), isotope copper powder, nickel wire, cadmium, aluminium and other metals.