Supervisors of Langfang Zhongpu Security Service Co., Ltd. According to the inquiry of Tang Chun's personal profile, Tang Chun was born in Langfang on August 7, 1967, and served as a supervisor of Langfang Zhongpu Security Service Co., Ltd. on September/kloc-0, and still served as a supervisor on April 29, 2023. Langfang is a prefecture-level city under the jurisdiction of Hebei Province, which is located in the east of central Hebei Province, with Beijing in the north, Tianjin in the east, Cangzhou in the south and Baoding in the west.