zhejiang first hydro & power construction group co., ltd. (1st hydro) was established in 1965, originally named as zhejiang hydropower construction no. 1 engineering department at that time. in november 2011, the company standardized modern enterprise system and established zhejiang provincial no.1 water conservancy & electric power construction group holdings co. ltd. the company is a highly qualified contractor specializing in top grade general contracting of hydroelectric construction. until january 2016, it is the first province-owned enterprise with top grade qualification in hydraulic and hydroelectric engineering contraction and the only enterprise in zhejiang province with the top grade qualification of hydraulic and hydroelectric engineering contraction.