Optical Whitener KCB, Optical Brightener KCB, 5089-22-5 manufacturer / supplier in China, offering Optical Brightener KCB for PE Foam, Tinopal whitener OB, OB-1, OB-2, FP-127, KCB, KSN, CBS-X, Optical Brightener OB-1 Greenish for PVC, ABS and so on.
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