The application of GB standard steel profiles varies significantly among countries based on multiple factors. In China, large - scale urbanization and industrialization drive the use of these profiles in high - rise buildings, large - scale factories, and extensive infrastructure networks. The domestic availability and familiarity with GB standards enable efficient project execution. In Southeast Asian countries, the focus is on rapid urban growth and basic infrastructure development. GB profiles are commonly used in low - to medium - rise residential buildings, small - scale industrial plants, and rural infrastructure projects, as they offer a cost - effective solution to meet the region's development needs. In African countries, with diverse economic and development levels, GB steel profiles are applied in a wide range of projects, from simple rural housing and community facilities to more complex energy and transportation infrastructure. The affordability and adaptability of these profiles make them suitable for projects with limited budgets and varying technical requirements. In Middle Eastern countries, GB profiles are often used in high - end construction projects, such as luxury hotels, shopping malls, and iconic skyscrapers. Here, while cost is a factor, the ability of GB profiles to meet high - quality and performance standards, along with the support from Chinese suppliers in terms of customization and technical expertise, also contributes to their adoption.