Speaking of fish bladder glue, it is very famous. Fish bladder glue is commonly known as yellow fish glue. A rubber compound obtained by processing the yellow swim bladder. The main ingredient is raw gum. The viscosity is very high and the gelling strength exceeds that of ordinary animal glue. It has a particularly good adhesion effect on wood. In the past, when doing carpentry, pigskin glue was used. But it is incomparable to fish bladder glue.