Plastic using optical brightening agent is a fluorescent dye, known as white dye, is also a complex organic compound. It can excite incident light to produce fluorescence so that plastic can be obtained similar fluorspar sparkling effect, so as to achieve the whitening effect.

PF is suitable for whitening polyester fiber,polyamide fiber and acetate fiber,or synthetic fiber -cotton,-wool or -silk blend fabric. Light-colored or printed fabric treated with PF looks brighter and more pleasant to eye. It is suitable for and having excellent whitening and brightening effect on almost all of the existing plastics and their products.