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It is generally recommended to install Eterpan Siding on steel / aluminium / wood profiles, so that the entire external wall system can achieve better thermal insulation, waterproof and external wall protection functions. However, if the wall itself is very flat, such as the wall after being leveled with cement mortar, nylon anchor bolts can also be used to directly fix the board on the wall. However, this kind of keelless installation method requires that the board must be stacked on the wall, and it is not recommended to use the plate tiling method.