Novartis Ag (Switzerland)
Danaher Corporation (U.S.)
Topcon Corporation (Japan)
Carl Zeiss AG (Germany)
Hagg-Streit Surgical GMBH (M?LLER-WEDEL GMBH) (Germany)
Accu-Scope Inc. Alltion (Wuzhou) Co. Ltd. Arri Medical (Arri Group)
Karl Kaps GmbH & Co. Kg
Takagi Seiko Co. Ltd. among others.