Sir/Ms:
We are Fuzhou Zhongtuo Optoelectronic Co.,Ltd. we are professional manufacturer of Hand held Refractometers .
we release a new style refracometer,elegant appearance,simple operation,easy to carry,good quality and favourable price,and maintain all models and functions of the original refractometer. I hope you like it.
Product information in the attachment, please check, thank you.
Best regards
Martin