China Water Resources and Hydropower Eighth Engineering Bureau Co., Ltd. is a large-scale state-owned comprehensive construction enterprise with super-grade general contracting of water conservancy and hydropower engineering and Grade A qualification for water conservancy industry design. It is a wholly-owned subsidiary of China Water Resources and Hydropower Construction Co., Ltd. Due to business needs, the Eighth Water Resources and Hydropower Bureau built a comprehensive office building in Changsha. Its window decoration projects are mainly based on manual soft screens, electric opening and closing curtains, electric roller shutters and other products.