This 45 degrees corner connecting profile is suitable for 40mm square extrusion, It can be used both for 45 degrees connection and 135 degrees connection. This aluminum profile has 3 system grooves, and the groove width is 4.3mm. By using this aluminum connected post, many booths which have special angles can be realized easily. Lingtong’s products are all environmental-friendly and non-polluting, the quality of all LT materials comply with German standards, up to now, the products have already been sold to more than 103 countries all over the world and are well accepted by domestic and overseas customers.