2#,Shangmaogang,Yucheng City.

To You Optical Instruments Co.,Ltd. ,specialize in professional handheld refractometer in China,We supply refractometers - Brix refractometer ,salinity refractometer,clinical protein refractometer,ba...

haidian, Beijing, China

Beijing HBRK Optical Instrument Co., Ltd., specialize in professional hand-held Refractometers. We supply the refractometer for sugar, salt, alcohol, medical, freezing point, milk and so on, widely us...