we are a state-owned military industries group in China, main lines as follows : .astronomy telescopes,binoculars and accessories,large astronomical instruments for observatories,including refractor, reflector, Maksutov Cassegrain,Wide angle,ED,zoom eyepieces,etc. .spotting scopes for birding and shooting,including built-in digital camera. .military & hunting & shooting scopes and rifle scopes,incluing tactical scopes/side focus adjusting. .military binoculars & rifle scopes,including several different period products of Chinese army. .digital binoculars & monoculars,including different pixes image. .night vision equipments and accessories,including image intensifier tubes,microchannel plates,fiber faceplates,high power supply. .medical loupes/surgical loupes/dental loupes,and binocular loupes/loupe binoculars for outdoor man/fishers. .military compasses,including different period of Chinese army. (if you are interested in our optics, please contact us)