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Plastics Oba Optical Brightening Agent Ob (Fluorescent Brightener 184)
Antioxidant 215/Antioxidant 220/Antioxidant 225/Antioxidant 561 CAS 6683-19-8/31570-04-4
PVC Foaming Optical Brightener Ob-1 CAS (1533-45-5) Widely Used in Plastic Film