1, King Kong is a natural hard material, which is used to make jewelry, handicrafts and decorations. High hardness, no scratching and no deformation, so it is used to make high-value ornaments. King Kong has a unique texture and color, and its value is also related to its rarity.

2. Plastic is a kind of synthetic material, which is used to make various products, such as containers, packaging materials, pipes, etc. Low hardness, it will be scratched and deformed, but it has the advantages of portability, easy processing and low cost. In addition, by adding different additives, the color, hardness and other characteristics of plastics can be changed.