Hangzhou Keting Optical Technology Inc.（KOTI） was established in 1996. It is high-tech manufacturing company based on professional and perfect coating service .KOTI was located in Gudang Industrial Park and on the lakeside of the beautiful West Lake .In 2006,KOTI moved to the new plant in Yuhang District ,which has cover area 20000m2 and building space 17000m2 .KOTI has a superior R&D team and strong support from the Optical Coating Research Center in Zhejiang University .KOTI basically produces large quantities of various multilayer optical coatings for LCD/DLP/LCOS projectors ,DSC/DV/DVD digital imaging products ,and develops high-end multilayer optical coating for advanced precision optical instruments, such as in biomedical sciences ,new energy ,and astronomy. Products are mainly exported countries and regions such as Japan, USA and Europe. KOTI has been developing steadily since its establishment. At present, KOTI owns more than 20high vacuum coating machines with chamber size from 900 to 1300mm, including Optorun (Japan), Leybold (Germangy) ,and Nanguang (China) ,and is equipped with a whole series of relevant inspection and facilities, etc. As a worldwide leading supplier, KOTI has enjoyed a high reputation the optical coating industry KOTI received certificate of ISO9001 in 2002 and certificate of Green Partner from Sony in 2007. Moreover, KOTI gained ISO14001 in 2009 which prove better its effort in environment protection.