Nouvel is one of the best China Metal Sunshade Louver manufacturer. Metal Sunshade Louver made in China is a type of architectural feature that is used to control sunlight and heat that enters a building. It is made of metal slats or louvers that are mounted on a frame and placed over windows or other openings. The louvers can be adjusted to allow different amounts of light and heat to enter the building, depending on the time of day and the desired level of comfort.