The main profile ofthe curtain wal frame system breaks through the limitations of the sauare section of the previous products'it approximates the appearance of the T-shaped steel structure. but retains and upgrades the advantage of TBO-60D's functionasurface - setting an internal expansion notch that can be installed without damage to the structural function, meeting therecuirements ot the connecting components in the curtain wal, meeting the recuirements o the protile notch and the size matchinofthe glass panel, and ensuring the load requirements of the curtain wal system. The maximum design dimension of its facade is210mm, At the same time. the width of the profile in the rear view is only 28mm, which sets of the large-span and transparent glasscurtain wall and partition of commercial buildings and public area buildings, fully displays the most exquisite beauty, and realizesthe perfect combination of function, mechanics and aesthetics.