Sichuan Ertan International Supervision Engineering Consulting Co., Ltd., referred to as "Ertan International", was established in 1995. It is a wholly-owned subsidiary established by Chengdu Institute of Power Construction Group to provide engineering construction consulting services. The company is mainly engaged in engineering consulting services such as water conservancy and hydropower, highway traffic, electric power, municipal industry and civil construction, port and waterway, etc. It has the comprehensive supervision qualification of the Ministry of Housing and Urban-Rural Development and the Grade A supervision qualification of the Ministry of Water Resources, and has more than 800 professional technicians and managers in Ertan, Longnan, Changheba, Houziyan, Jinping II and Xiluodu.