主要な企業: Nippon Electric Glass Co Ltd General Electric Leuchtstoffwerk Breitungen GmbH Intematix Corporation Lumileds Holding B.V. Beijing Yuji International Co Ltd Harvatek Corporation OSRAM GmbH Tailorlux GmbH Mitsubishi Gas Chemical Company Nichias Corporation Luming Technology Group Co Ltd Edison Opto Corporation Materion Corporation PhosphorTech Corporation