University of Bristol - Historical Photographs of China reference number: Ep01-737. Strike poster at British Cigarette Company (BCC) factory, Pudong, later known as Yee Tsoong Tobacco Co. Ltd. Transcription: 要求厂方实行工厂法–第五区卷烟业工会宣传科 Translation: Demand factories implement the Factory Law! (5th District Rolled-Tobacco Workers' Union, Propaganda Section). See Ep01-631 (possibly a photograph taking during the strike).
Tobacco Workers' Union strike poster, Shanghai