Optical Brightener OB-1 for recycling plastic pure powder 98.5%min with CAS No 1533-45-5,as plastic additives widely usde in recycled plastic, recycled polypropylene or pp plastic particles ,PVC, PS, ABS, PE, PP ,recycled polymer whitening and recycled PET polyester staple fiber whitening and other plastics recycle.Ogilvy chemical Optical Brightener OB-1 is a special plastic recycling whitening agent and is the best choice for recycling plastic whitening.
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