China Jiaotong Dalian Project is located in a remote area with a long construction line. Platinum gravel is acid-resistant, alkali-resistant and corrosion-resistant plastic formwork, and the performance and size of the formwork will not change in the temperature range of - 20 ~80 (?) The weight of platinum gravel formwork is only 13Kg/m2. No crane is needed in the process of installation, removal and turnover of formwork. The platinum gravel resistant formwork is a composite formwork with back ribs, which does not need wooden square and nails. It can be used in drainage ditches, culverts, tunnels, bridges, slopes, retaining walls and other parts of expressways. Platinum gravel plastic resistant formwork has been successfully applied to 104 National Highway, Maoming Industrial Avenue, Jieyang High Speed, Yuhuai Railway and other projects.