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A water treatment agent is a chemical or substance used to improve water quality by removing contaminants, balancing pH levels, and preventing scale buildup. These agents are essential in industrial, municipal, and residential water treatment systems to ensure clean, safe, and efficient water use.

Optical brightener ≠ bleaching agent. In the papermaking industry, optical brightener cannot replace bleaching agent to bleach pulp, but is used as a complementary color brightening agent for bleached pulp.

Pearl pigments are used extensively in printing inks, cosmetics, automotive coatings, and crafts because of their gorgeous iridescent and shimmering characteristics.

​2024 China-Africa Economic and Trade West Lake Forum and Zhejiang-Africa Economic and Trade Cooperation Resources Matchmaking Conference.