Pharmaceutical Intermediate, Optical Brightener manufacturer / supplier in China, offering Fluorescent Brightening Agent Er-2 C. I. 199 CAS 13001-38-2 for Plastic, CAS 27344-41-8 CBS-X for Washing Fluorescent Whitening Optical Brightener, Fluorescent Whitening Agent Er-2 C. I. 199 CAS 13001-38-2 for Plastic and so on.
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