Huanghe road Metallurgical Road, Nankai District. The office address of Tianjin Longsheng Food Factory is located at huanghe road Metallurgical Road, Nankai District, Tianjin, the economic center of Bohai Rim region. It was incorporated in Tianjin Nankai District Market and Quality Supervision Administration on June, 2004 1 16. During the 19 years when the factory grew, we always provided customers with good products and technical support and perfect after-sales service. Our factory is mainly engaged in the production and management of grain.