Optical lenses; Electrodes; Glassware for scientific experiments in laboratories; Fuel cells; Optical filters; Laboratory chemical reactors; Photomask substrates, namely, synthetic quartz glass plates being structural parts of excimer steppers, for use in fabrication of integrated circuits; Electrodes for laboratory research; Battery separator films; Crucibles for laboratory use; Bioreactors for cell culturing for scientific research; Electrolysis apparatus for laboratory use