76264826
May 31, 2001
Sep 17, 2002
Quartz glass tubes, quartz glass rods, quartz glass blocks, quartz glass crucibles, quartz glass bowls, quartz glass flasks for laboratory equipment and for the manufacture of optical fibers; optical fibers; fiber optic preforms; semifinished quartz glass tubes and quartz glass rods for the manufacture of optical fibers
Electrical and Scientific Apparatus