1 Antimony, bismuth, tellurium, selenium; Semiconductor compounds, namely, cadmium telluride, cadmium sulfide, cadmium zinc telluride, zinc telluride, tellurium dioxide, indium antimonide, iron fluoride, arsenic trisulfide, arsenic pentasulfide, iron selenide, gallium trichloride, indium chloride, germanium oxide, bismuth telluride, antimony telluride and gallium antimonide, telluric acid, selenious acid, lead telluride, lead sulfite, cadmium magnesium telluride, manganese telluride, cadmium selenide, cadmium selenium telluride, lithium sulfide, lithium fluoride; Chemicals, namely, bismuth telluride, antimony telluride, gallium antimonide, telluric acid, tellurium dioxide, selenious acid, lead telluride, lead sulfite, cadmium magnesium telluride, manganese telluride, cadmium selenide, cadmium selenium telluride, lithium sulfide, lithium fluoride, bismuth beta resorcyclate, bismuth citrate, bismuth hydroxide, bismuth nitrate pentahydrate, bismuth oxide, bismuth oxychloride, bismuth subcarbonate, bismuth subcitrate, bismuth subgallate, bismuth subnitrate, bismuth subsalicylate, cobalt nitrate, cobalt oxide, gallium nitrate, gallium oxide, gallium trichloride, germanium dioxide, indium nitrate, indium oxide, indium sulphate, indium trichloride, lead chloride, lead nitrate crystals, nickel nitrate, sodium selenite, zinc selenite, iron fluoride, arsenic trisulfide, arsenic pentasulfide, iron selenide, gallium trichloride, indium chloride and germanium oxide