Nankai government affairs service center. In Nankai District, Tianjin, in order to meet the ticket demand of newly established enterprises, Nankai Taxation has set up a machine for self-service receipt of invoices and free receipt of Ukey in Nankai Government Service Center, which avoids the problem that enterprises have to collect invoices and Ukey in the tax comprehensive hall of Haiguangsi office area after completing industrial and commercial registration, and can collect them in Nankai Government Service Center, while Nankai District of Tianjin collects invoices in Nankai Government Service Center. Nankai District Administrative Licensing Service Center is an office of Nankai District Committee and District Government that conscientiously implements the Administrative Licensing Law of People's Republic of China (PRC), comprehensively promotes administration according to law, transforms government functions, makes government affairs public, and creates the best examination and approval service environment.