QH Technology is a number NVChain Group,Who was founded in 2014 atShenzhen as a office to develop oversea market for Nantong factory.we have a professional team to deal with produce, design andselling of all kinds of optical glasses &spectral filters&Optical Parts,Our products are widely used inOptical Fiber, opticalinstrument,security surveillance,medical cosmetic,aeronautical and space and photograph and soon
