They are our frist digital refractometers developed on the basis of digitizing our Hand-held Series, which are of the complete and throughout upgrading and innovation from our Hand-held series. Microprocessor is the central part of these refractometers, and also bearing digital picture processing and automatic temperature compensating systems.The reading can be precisely displayed by three and a half figures of liquid crystal display(LCD). They are easy to be operated and carried with a graceful and slim appearance, they have passed the test by the measurement offices in many countries.

They have entered into market over five years. The quality is stable and the price is good. There are 7 branches including 18 models.