N,N'-bis(2-aminoethyl)ethylenediamine dihydrochloride 38260-01-4, Information for N,N'-bis(2-aminoethyl)ethylenediamine dihydrochloride 38260-01-4, Suppliers of N,N'-bis(2-aminoethyl)ethylenediamine dihydrochloride 38260-01-4