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Roof formwork support system: the structure is divided into main keel and secondary keel, in which the main keel is retractable (the extension length specifications are 4m, 3M and 2m), and the secondary keel is non retractable (the length specifications are 3.0m, 1.8m and 1.4m).
Roof formwork support system: the structure is divided into main keel and secondary keel, in which the main keel is retractable (the extension length specifications are 4m, 3M and 2m), and the secondary keel is non retractable (the length specifications are 3.0m, 1.8m and 1.4m).