A thesis project for a smart IoT-based septic tank monitoring system that utilizes an ultrasonic sensor (JSN-SR04T), Arduino, ESP32, LoRa SX1278, SIM800L EVB GSM module, Firebase, and a web application. This system provides real-time monitoring, predictive analytics, SMS alerts, and dynamic visualization for efficient septic tank management.

Beijing Hanqi Environmental Technology Co., Ltd. (Hanqi Group) is a Beijing-based environmental technology company specializing in full-process chemical and oily wastewater treatment for the petrochemical, coal-chemical, new-energy, industrial-park, and municipal sectors.

Cassie (Aircassie) develops advanced air filtration technology for healthcare and indoor environments. Its flagship CASSIE system uses patented filtration to eliminate mold, viruses, and bacteria with zero harmful emissions, contrasting with UV and ionizer systems that emit ozone.

Know Your Water. Das AquaVita delivers AI-integrated sustainable water technology, advanced RO systems, CEA, and RAS solutions for smart water management, aquaculture optimization, and next-generation aquatic ecosystems.