Shanghai Best Optical Instrument Co., Ltd. has been focusing on the optometry/ophthalmic instruments since 2011 in Shanghai, China. We are committed to offer quality optical instruments and service at competitive price, we also provide good warranties on our products. Our main products include Auto refractometer, Auto lensmeter, Slit lamp, Chart projector, Phoropter, Lab equipment and Optical tools, our products get CE and ISO approved. Welcome to choose us to work with you by win-win cooperation.