Beijing WZ Refractometers Factory are specialized in the design and manufacture of refractometers, and we only manufacture refractometers. Our professinal had been this field for more than 10years. Our specification includes: 1. Brix2. Salinity3. Antifreeze / Battery / Cleaning / Emulsion fluid4. Clinical Protein5. Alcohol6. Grape juice7. As well as the combination function of above types. 8. Gem refractometerOur annual output is over 30, 000sets. Our competitive quality, price and service help us win many reliable customers all over the world. More than 60% of them are exported to Russia, Europe, American, Japan, South & East Asia etc. Our motto is: Allways do the best for our customers.