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Hardener for use in adhesives based uru00c9ia - formaldehyde - Melamine - formaldehyde and uru00c9ia, composiu00c7u00e7o adhesive comprising the said hardener and its use.
Hardener for use in adhesives based uru00c9ia - formaldehyde - Melamine - formaldehyde and uru00c9ia, composiu00c7u00e7o adhesive comprising the said hardener and its use.