j-fiber GmbH

Optical fibers; Fiber optics for data communication purposes, namely, Optical components in the nature of connectors comprised of one or multiple optical fibres for the transmission of electromagnetic rays or optical signals; Vitreous silica fibres, other than for textile use; Preforms for optical fibres and preforms for optical large core step-index fibres, namely of multilayer quartz rods made from ultrapure quartz glass with a variety of breaking indices for the manufacture of optical fibres; Science and technology research services and development services in the field of process technology for the manufacture of fibreoptic goods