JFE Advantech Co., Ltd. is a Japanese company established in 1944 that contributes to society by providing water level detectors, flowmeters, vibrometers, weighing systems and other products widely used in manufacturing worksites. In 2010, we merged with JFE Alec Co., Ltd. expanding our field of operations to include oceanographic and limnologic measurements. We offer products and services that anticipate the needs of systematized modern production worksites, both in Japan and overseas. JFE Advantech produces various sensors including CTDs, Chlorophyll, Turbidity, Dissolved Oxygen, Water Current, Wave Height among others. Our fast responding optical DO sensor "RINKO" has been recently integrated into Argo floats and now it is being distributed worldwide. We are also introducing our tow-yo CTD system for coastal water monitoring, YODAProfiler. Our robust wiper system maintains long-term stable and reliable measurements for studying seasonal/interannual variability of marine environments.