How to check the authenticity of Qingdao subway invoice

Call Qingdao local tax. Qingdao, a prefecture-level city under the jurisdiction of Shandong Province, is also called Island City and Jiaoao. You can call Qingdao local tax service to check the authenticity of subway invoices. Qingdao is a sub-provincial city, a city with separate plans, a mega-city, an important coastal central city in China, a coastal holiday tourist city and an international port city approved by the State Council.