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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.

Alibaba offers 142 optical brightener agent vbl products. such as free samples, paid samples.

A wide variety of red 2 pigment options are available to you, such as coating pigment, ink pigments, and ceramic pigments. you can also choose from rare earth powder. as well as from iron oxide, titanium, and lead. and whether red 2 pigment is organic pigment, or inorganic pigment. there are 6,736 red 2 pigment suppliers, mainly located in asia.

China optical whitening agentselect 2020 optical whitening agent products from verified china optical whitening agent manufacturers, suppliers on made-in-china.

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KCB optical brightener for white masterbatch supplier is definitely the product that we've continued to emerge inside the China market and achieved superior reputation. Our items advertising and marketing network at all over the China regions. Extra than ten years, we've created into a high-volume, multi-function in the traits, it may completely meet the demands in the KCB optical brightener for white masterbatch supplier industry.

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