China-Places.com a répertorié environ 15 entreprises dans District de Longcheng. Certains des mieux notés entreprises dans District de Longcheng sont- Compagnie de taxi de Chaoyang Tianqi, Zone de développement de Chaoyang Hongda Plastics Limited Company, Société de produits métalliques Chaoyang, Chaoyang Yicheng Color Steel Steel Structure Limited Company, Chaoyang Jianghe Plastic-Steel Windows and Doors Limited Company, Chaoyang Duchengqing Color Steel Plate Co. Ltd., Chaoyang Shunxing Plastic-Steel Windows and Doors Limited Company, Chaoyang Ningyuanfei Metal Recycle Limited Company, Chaoyang Gaofengfei Metal Recycle Limited Company & Chaoyang Shunxing Plastic-Steel Windows and Doors Limited Company.