Yulong Optics Co.Ltd

Kunming Yulong Optical & Electronics Technology Co., Ltd. is a high technology company, which specialized in optical filter design and processing. OPTOLONG Established in 1999, and located in Kunming City .We provided nearly 2000 optical coating lenses for more than 700 optical companies all over the world, and we have working relations with 4 global top 500 enterprises and 2 world famous EMS manufacturers.We&＃39;ve obtained ISO9001 system certificate since 2005. In September 8th, 2006, tested by SGS, ROHS certification. We are the first people of Golden Supplier from Alibaba, and passed the third party ---TUV Rheinland and Bureau Veritas independent audit.OPTOLONG products including three main categories :Astronomy Filters:We are the most professional manufacturer of astronomical filters in China,we have broken the foreign monopoly situation on astronomical filters. OPTOLONG produce more than 20 kinds of astronomical filters ,such as UHC,CLS-CCD,H-Beta,O-III,H-Alpha,SII-CCD 12nm,LRGB,Night Sky H-Alpha,ND2?1000,offers more options for amateur astronomers all over the world.Fluorescence Filters:We design and product all specifications of fluorescence filters,include excitation filter, emission filter,and dichroic mirror.Laser and Bandpass Filters:We are with the filter design and production experience for many years, can be customized bandpass filter with wavelength from 250 nm to 2000 nm.Also others :Edge Filter,Beam Splitters, Reflective Mirror, Anti-reflective coating, Optical windows etc. Custom filters can be fabricated:please contact our technical support staff to discuss your particular requirements.