Auto refractometer & auto lensmeter are the main products of our factory. Now we have five types of refractometer and one type of auto lensmeter on the prodcuts line. And sold well in the market of both China and world. The function and technic of them are all arrived at the world advanced level. Welcome the importer and wholesaler all over the world contact us . And we also could do OEM for the factories who be interested in these optical equipments. Please visite our website for details.