China Water & Power Construction Corporation Eighth Engineering Bureau Co., Ltd. — A core enterprise under the China Power Construction Corporation Group, holding the national "Triple A" qualification (General Contracting for Water Conservancy and Hydropower Engineering, General Contracting for Civil Engineering, and General Contracting for Municipal Public Works Engineering).

Dongjian 8th Bureau requires fiberglass louver windows to beautify and mask the related equipment behind their headquarters building. In addition to the basic requirements for fiberglass louver windows, they must be beautifully and neatly arranged, uniform in appearance. Hengxin has years of experience in producing fiberglass louvers and uses raw materials from listed domestic companies, resulting in a louver surface with even luster and a mirror-like effect. The company also uses CNC machine tools to punch holes in the uprights of the louvers, ensuring the product is beautifully and neatly crafted, and has gained customer approval.