We are shanghai yuefeng instruments&meters co., ltd based in Shanghai , China.Our business is related to Measurement Instruments industry and we specifically deal in whiteness meter. Please find our product details below: LCD display colorimeter this instrument is used the principle of photoelectric colorimetry to measuring its color concentration of solution."EBC, Hazen"are measuring unitc.it can be widely apply to power plant, waterworks. Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.