PS white masterbatch is a kind of engineering plastic raw material, which is usually used in the manufacture of various plastic products, such as electrical casings, toys, tableware, etc. White masterbatch is a kind of polystyrene granules with white or milky white color. They are usually made of polystyrene resin mixed with some additives, and their color and performance can be changed by adding pigments and other additives during the production process.