A thick, clear gel-like substance being applied to a surface.

The video shows a clear waterproof glue being applied to various surfaces like window sills, tiles, and a large tank. Water is then poured over these surfaces to demonstrate the waterproof effect. The glue is applied with brushes and appears to create a protective, water-repellent layer. The product is shown in a white and yellow tub with Chinese text and the English words "WATERPROOF GLUE".