Chemicals, namely, phosphors, phosphors for use in the manufacture of LEDs, and phosphors for use in the manufacture of lighting; chemicals, namely, chemical compounds made of yttrium, aluminum and garnet for use in light conversion; metallic oxide; unprocessed plastics; photographic chemicals; ceramic semi-worked products, namely, fluorescent ceramic powders for use in manufacturing; ceramic semi-worked products, namely, ceramic glazings in the nature of a dry chemical preparation for use in...