China Ningbo Dongzi(Huaguang) Instrument Co. , Ltd. Is situated in Yingzhou District, Ningbo China. After more than 20 years of business development, the company has become a professional manufacturing enterprise combining technologies of optics and electronics. Our products, ring light, led ring light range from ZTX series medium sized stereo microscopes, XTX series of mini stereo microscopes, NK series of zoom biological microscopes, SX series of student microscopes and various optical lenses, parts and components. Our products, ring light, led ring light have so far been exported to more than 20 countries and areas, such as the Unites States, Brazil, the Netherlands, France and Japan.