Wasion Group Holdings Limited is an investment holding company. It is a provider of energy measurement equipment, systems and services in China. Wasion Group has three segments. The electronic meters segment is engaged in the development, manufacture and sale of electronic power, water, gas and heat meters. The data collection terminals segment is engaged in the development, manufacture and sale of data collection terminals. The energy efficiency solution segment is engaged in providing energy efficiency solution services. Its subsidiaries include Oceanbase Group Limited, Changsha Wasion Industrial Investment Company Limited, Changsha Weisheng Energy Industrial Technology Company Limited, Changsha Weisheng Import and Export Trading Company Limited and others.