 SHANGHAI, July 22, 2021 PRNewswire -- 51job , Inc. Nasdaq : JOBS 51job or the Company, a leading provider of integrated human resource services in China, announced today that it has entered into an agreement to purchase an office building in Shanghai, which will serve as its new corporate headquarters. The building is part of the Crystal Plaza complex, which is located in the Qiantan area of Pudong District. 