Ball valve structure and characteristics of different types of ball valve
Optical Brightener agent, commonly known as white dye, is a fluorescent dye and a complex organic compound that enhances the whiteness and luster of a substance. Whitening agents are mainly used in textiles, paper, plastics, paints, detergents, printing inks, waxes, packaging materials, etc. Whitening agent is only an optical brightening and complementary color, and can not replace chemical bleaching. Therefore, the coloring matter without bleaching, directly treated with whitening agent, can not fundamentally obtain the effect of clean white, should be noted when using.
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