The roof and wall of Korla project are all made of aluminium-magnesium-manganese board, with a total floor area of more than 20,000 square meters. The aluminium-magnesium-manganese board is a kind of roof and wall material with high cost performance ratio. Aluminum alloy has been widely used in the construction industry. It plays an important role in the development of modern architecture in the aspects of comfort, light weight, durability, economy and environmental protection. Water resistance, waterlogging resistance, easy bending and welding processing advantages are widely recognized as roofing and wall materials more than 50 years of service as architectural design; due to the climate of Ocean Building design, choose corrosion-resistant materials.