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p-tert- Butylphenol- formaldehyde resin (low molecular weight) p-tert- Butylphenol- formaldehyde resin (low molecular weight)
p-tert- Butylphenol- formaldehyde resin (low molecular weight) p-tert- Butylphenol- formaldehyde resin (low molecular weight)
p-t-B-f p-t-B-f
p-t-B-f p-t-B-f