For this problem, it is generally not allowed to be punched. It is easy to leak and leak water. If you must punch, you must only punch an eye on the aluminum alloy material before punching, it is not easy to move when punching in this way. This means that it cannot be hit on the whole broken bridge aluminum, that is, it cannot be hit on the broken bridge for heat insulation, let alone wait until it cannot be installed. It can be hit on the whole broken bridge aluminum, in this way, it is easy to break the heat insulation strip inside, which can not prevent heat insulation, and it is also easy to leak. What we mean is that we can't beat the heat insulation strip on guangguang aluminum. At the same time, you can offset the angle by 5cm. Generally, there are also Angle codes on the angle. So as not to destroy the whole broken bridge aluminum doors and windows the original function.
