Desc:In life, there are too many light sources will produce harmful light, especially the sun; There are three kinds of light emitted from sunlight: visibl...

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Desc:General Introduction:An objective lens is a lens group composed of several lenses. The purpose of combination is to overcome the imaging defects of a ...

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Desc: Welding filter lens technical data:NOTICE FOR USAGE:The welding filter complies to the standards EN 166/EN 169 and ANSI Z87.1-2003 . It should be kep...

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Desc:General Introduction:An objective lens is a lens group composed of several lenses. The purpose of combination is to overcome the imaging defects of a ...

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Desc: Power Digital LED Solar Watch Type:Charm, Digital, Fashion, Luxury, Quartz, Sport Feature:Alarm, Auto Date, Chronograph, Complete Calendar, Day/Date,...

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