The features of flat-tie system: The aluminium formwork reinforcement system of flat-tie type has lighter accessories in weight. It has smaller gaps for the distances between raking shores, which makes it more flexible for precision adjustments and more convenient for verticality control. Therefore, the casting result of the concrete wall using flat-tie reinforcement formwork system has better verticality. There are no obvious holes left in the concrete wall upon the dismantlement of the formwork system with embedded flat-ties, as the 2 edges of the flat-tie will be cut by using particular tools. Therefore, the cost for hole filling afterward can be saved up, while the waterproof construction quality for the wall body is more guaranteed.