PiQuant provides unique IoT component analysis solutions based on light, analyzing air, skin, and water. We provide AirQuant, Water Scanner, Skin Scanner, and ColiQuant. AirQuant is an Indoor Air Monitoring IoT solution, which can monitor real-time environmental data. It can manage air quality efficiently with connection to HVAC system. Water Scanner is a portable water quality monitoring solution. It can analyze the cause of water pollution in a few minutes in the field. E. coli can be detected with Water Scanner, and the GCE program (run by the Bill Gates Foundation) phase 2 has been contracted. ColiQuant is a solution that can detect total E. coli in water using body temperature. By attaching it for 24 hours, the presence of the total coliform in water can be determined by color change. Skin Scanner is a portable, skin condition checker based on spectroscopy. Skin-Scanner can analyze even the components of the dermis. The core technology of PiQuant products is unique noise-canceling technology. It solves the noise problem of existing spectrometers. Conventional spectrometers generate too much noise as their size is reduced and are large and expensive. By developing a unique noise canceling technology that distinguishes noise signals, the signal-to-noise ratio (SNR) is improved by 48,000 times even in the small spectrometer. AirQuant are installed in many district offices, healthcare centers, and multi-use building For skin scanners, we are collaborating with world-famous beauty brands such as L'Oreal. Based on the world's best E. coli detection performance, the water scanner is collaborating with the Gates Foundation and is also collaborating with the K-Water. ColiQuant has been donated to the Republic of Haiti through Good Neighbors. PiQuant's spectroscopic technology enables accurate analysis of the materials, so the technology can be applied to various fields such as smart home, smart city, smart factory, smart farm, and healthcare.