news Toxicity assessment of 4,4′-diaminodiphenylmethane and its safety protection measures in industrial production Overview of 4,4'-diaminodimethane 4,4'-diaminodiphenylmethane (4,4'-Diaminodiphenylmethane, referred... 02/1844'-diaminodiphenylmethane and its safety protection measures in industrial production Toxicity assessment of 4