Treefrog Bike Rack, As a suction cup roof rack brand, we have passed the German TÜV + EU CE double certification, and won a number of patents, It is the first suction cup roof rack brand in China, with the highest brand sales and the largest market retention. The vertical load-bearing capacity of a single suction cup can reach 110kg, and all suction cups have undergone two 24-hour air leakage tests before leaving the factory.