Yellow gum, Tawau gum, double gutta-percha.

1. Yellow gum: Yellow gum is the glue of seabass, and it is divided into saltwater varieties and freshwater varieties. The most common one on the market is the abundant African freshwater species, the Nile perch. Yellow gum has original simple shape, open sheet shape, and flat strip shape.

2. The past and present life of Tawau gum: The fish species of Tawau gum are larger in size. Its isinglass is usually large and thick, but whether it is Southeast Asian Tawau gum or non-Tawau gum, the gum is relatively soft.

3. Double teeth: Double teeth are the glue of monkfish and are not common on the market.