China-Places.com listou aprox 92 empresas dentro Haiyang. Alguns dos mais bem avaliados empresas dentro Haiyang estão- Haiyang Zhende Property Management Company Limited, Thrive Garment Manufacturing Company Limited, Fabricação de roupas Dongqian, Empresa Limitada de Fabricação de Vestuário do Extremo Oriente, Haiyang Dongchen Garment Manufacturing Company Limited, Haiyang Friendship Industry & Trade Garment Manufacturing Company Limited, Haiyang Xinhua Garment Manufacturing Company Limited, Tianzhi Garment Manufacturing Company Limited, Haiyang Hongyu Industry Company Ltd & Haiyang Jinhaiitu Lunzhou Limited Company.