Beijing Prina Chemical Industry Co.,Ltd.
4.4-bis(2-disulfonic acid styryl) biphenyl
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2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole
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1,4-Bis(2-cyano styryl)benzene
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OPTICAL BRIGHTENER ER
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Fluorescent whitening agents MDAC
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4,4'-Bis(dichloromethyl)-Biphenyl
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Benzaldehyde-2-sodium Sulphonate
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P-Carboxybenzaldehyde
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