Both optical brighteners and titanium dioxide are physical whitening agents, and they do not react with other raw materials, while bleaching agents achieve whitening through chemical reactions.
The resulting colorant products containing Optical Brighteners or pigments with a relatively high concentration can be used directly and have become a major means of coloring plastics.
Glow powder, also known as phosphorescent powder, is a fascinating material that brings light to darkness. Commonly used in crafts, safety applications, and decorations, glow powder absorbs light energy and re-emits it over time as a luminous glow.
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