Shiwei Industry and Trade Group is located in Qingzhou City, one of the ancient nine states. It is adjacent to the city’s high-speed railway station in the north. There are four high-speed entrances and exits near the company, and it is surrounded by two national highways and three provincial highways, with very convenient transportation. The company focuses on the production and research and development of large-diameter stainless steel special straight seam pipes. The company has invested in the production and research and development of stainless steel straight seam pipes since 2019, and currently has two major production and processing bases in Weifang and Yangzhou. In 2024, the company carried out a comprehensive and substantial upgrade of the pipe making equipment, the forming machine was upgraded to 8,000 tons and 15 meters, and all other process equipment were upgraded. The production capacity ranks among the top in the country, with an annual production capacity of 200,000 tons.