Yushan Sensing is a technology enterprise dedicated to the independent research and development of high-end water quality sensors. We have gathered a professional R&D team with multiple technologies including nanomaterials and optical sensing. Focusing on research and development of basic sensing technology. Targeting the laboratory, handheld, and online monitoring markets, we have launched multiple water quality sensors including five parameter/seven parameter, optical dissolved oxygen, fiber optic turbidity, four electrode conductivity, blue-green algae, chlorophyll, water oil, and COD. Widely used in various fields such as water environment protection, sewage treatment, industrial process monitoring, aquaculture, food fermentation, and pharmaceuticals. Technical improvement is the eternal driving force of Yushan's progress. Based on the understanding of mobile Internet, we launched a wireless water quality monitoring solution. By combining smartphones, tablets, and traditional measuring instruments through wireless transmission, a real-time and dynamic water quality monitoring system is created.