Sir/Ms:

We are Fuzhou Zhongtuo Optoelectronic Co.,Ltd. we are professional manufacturer of Hand held Refractometers .

We have 10 kinds of this Hand held Refractometers and Digital Refractometers.good quality and competitive price.We offer 1/3 of your price and 5years quality guarantee,The product has a 1-year warranty. If you purchase 100 units, you will get 5 free units. Digital Refractometers provide accurate measurement, easy to carry and easy to operate.

are you interested to get our catalog with pricelist

Best Regards

General manager

Martin