OIO Group, formerly, ESGL Holdings Limited, is a Singapore-based company focused on building and supporting operating businesses with engineering capability. The Company conducts its operations through its subsidiary, Environmental Solutions (Asia) Pte. Ltd. (ESA). ESA is a waste management, treatment and recycling company involved in the collection and recycling of hazardous and non-hazardous industrial waste from customers such as pharmaceutical, semiconductor, petrochemical and electroplating companies. ESA’s services include recovering minerals and metals from sludges and solid industrial waste, re-manufacturing chemicals from acid and alkali waste, recovering energy from packaging waste and recovering energy from wood waste. ESA harvests heat energy from approximately 500 metric tons (MT) a year of waste wood and electrical energy from the sun from its own 750-kilowatt peak (kWp) solar photovoltaic (PV) roof. ESA operates two facilities in Tuas, Singapore.