In 2019, the general office of the Ministry of housing and urban rural development successively approved Shandong Province and Hunan Province to carry out the pilot construction of steel structure prefabricated housing (Jian ban Shi Han [2019] No. 409), among which Shandong listed Jinan, Zaozhuang, Yantai, Weifang, Jining, Rizhao, Linyi, Liaocheng, Heze and Zibo Zichuan District as the key promotion areas of steel structure prefabricated housing to guide the traditional construction Building materials enterprises transform to new building materials enterprises, and vigorously develop new wall, floor, doors and windows and other green building materials matching with steel structure prefabricated houses. By 2021, more than 3 million square meters of prefabricated steel structure residential buildings will be built in the whole province, including more than 2 million square meters of prefabricated steel structure residential buildings in key promotion areas, basically forming steel structure construction industrial clusters in Southwest Shandong, central Shandong and Jiaodong. The company's advanced sound insulation materials for windows, doors and walls, easy installation and installation. It is highly in line with the national policy and conforms to the development trend of assembly design, which will contribute to the construction and development of steel structure prefabricated housing in Rizhao City and Shandong Province.