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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.

Optical brightening agent vbl cas:12768-92-2 manufacturer, fluorescent brightener vbl supplier, fluorescent brightener 113 producer from china, offering highest quality optical brightening agen 113 to global customers

Application it is mainly used for whitening synthetic detergents and soaps. it can also be used for whitening cotton, linen, nylon wool and paper.it is suitable for whitening cotton, terylene blended fabric and whitening of cotton blended fabric and widely used in detergents, bleaching and dyeing, paper, dyes and other.

As a optical brightener agent factory, we can export you optical brightener agent ob, ob-1, fp-127, cbs-x, er, 4bk, mst, swn. oba powder can be used for textile dyes, plastic, detergent and paper industry. more product please view hifactory.

Our business mostly engaged and export competitive price green 7 pigment. we rely on strong technical force and regularly create sophisticated technologies to meet the demand of competitive price green 7 pigment clients. We are sincerely welcome good friends from a variety of circles at home and abroad come to cooperate!


We are suppliers of all kind of competitive price green 7 pigment moved in marketplace for wonderful sales, we've got competitive price green 7 pigment type and specification's that will suit our customer's satisfaction. We have also attached competitive price green 7 pigment samples and also other of our requires with the above attached catalog sample.

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