Not state-owned enterprises, but private enterprises. According to the information inquired by Aiqi, Tangshan Steel Plate Co., Ltd. is a private enterprise, not a state-owned enterprise. Tangshan Medium Plate Co., Ltd. was established on September 8, 2004 with registration number 18, registered in Wangtan Town, Laoting County, Tangshan City, Hebei Province, and its legal representative is Cui Xiaodong. The business scope includes iron and steel smelting; Steel calendering; Metal waste and debris disposal; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology popularization; Sales of metal materials, metal ores and renewable resources; Road freight transport (excluding dangerous goods); Import and export of goods; Mechanical equipment leasing; Non-residential real estate leasing; Contract energy management; Motor vehicle charging sales; Catering service. (Projects subject to approval according to law can only be operated after approval by relevant departments).