Because of the advent of the era of system doors and windows, the performance requirements for thermally broken aluminum doors and windows are higher. Therefore, regarding profile structure, the thermal insulation strips must be on the same equipotential line. However, in the past, thermally-broken aluminum doors and windows products have staggered. It is also a thermally-broken bridge, but the performance is relatively not so high. Just as Suifu Doors and Windows is committed to developing broken bridge aluminum doors and windows, the system doors and windows also use insulation strips on the same equipotential line, which means vertical. At the same time, the insulation strips are made into multi-cavity structures for better heat insulation and sound insulation.