According to the research report of Liansu official website and related markets, Liansu is a large-scale building materials and home furnishing industry group in China, and its products and services cover pipeline products, bathroom products and integrated kitchens. Liansu's products are positioned to meet the needs of mass consumers, pay attention to cost performance and practicality, and provide products with reliable quality and moderate price as the main goal. Therefore, it can be judged that the Soviet Union belongs to the public category.