Haiheyuan campus. Official website of Tianjin Vocational College shows that the Department of Chemical Technology of Tianjin Vocational College is located in Haihe Garden Campus, No.2/kloc-0, Yaguan Road, Haihe Education Park, Tianjin. Tianjin Vocational College, located in Tianjin, is a public full-time ordinary college under the jurisdiction of Tianjin. Selected as a high-level vocational school with China characteristics and a professional construction plan. It is a national demonstration vocational college and a pilot unit of modern apprenticeship system.