This aluminum extension adaptor is suitable for 100mm square or round profiles, its standard length is 500mm and its width is 84mm, and its size can also be customized. This extension connector can connect two 100mm profiles to realize long-span frames. With this adaptor, lots of large-scale exhibition booths can be realized by LT system materials. Lingtong’s products are all reusable and non-polluting, in order to realize our vision: Bring Environmental-friendly Exhibition System Into Every Expo Space. The quality of all LT materials comply with German standards, it is well accepted by European and USA customers. Up to now, LT products have already been sold to more than 103 countries all over the world.