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Whitening agents / optical brighteners are additives that impart brightness to polymers and intensify the degree of whiteness. these agents function on the basis of the ‘fluorescence effect’; they absorb light in the uv spectrum and emit light in the blue region of the visible spectrum to yield a brighter and fresher appearance to the plastic.

The whitening effect of optical brightener agent could be estimated by visual method which better under the sunlight or measure by colorimeter. 3.light fastness there is no international standard for testing optical brightener lightfastness in plastics.most tests used din 54004 for reference.

China optical brightener catalog of fluorescent brightener kcb for shoe material, leatherette fluorescent brightener agent fp 127 provided by china manufacturer…

wholesale permanent red pigment for plastics in Vietnam exporter from China, we're the most professional supplier from USA with ISO9001 Certification. Also the items have already been certified by mutiple safety certification.We'll offer our wholesale permanent red pigment for plastics in Vietnam priducts in top-quality and most favourable value.


We're an enterprise that export wholesale permanent red pigment for plastics in Vietnam to China, we are authorized by the relevant state registratio. Key wholesale permanent red pigment for plastics in Vietnam and sell to many regions in China, solution offered upon request. We've got the spirit of "customer very first, honesty first" principle, with a quantity of enterprises established long-term cooperative relationship.

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