2,2'-Bis(trifluoromethyl)-4,4'-diamino biphenyl CAS No. 341-58-2 2,2'-Bis(trifluoromethyl)-4,4'-diamino biphenyl CAS No. 341-58-2Changzhou Sunlight Pharmaceutical Co., ... students graduated from universities and colleges, including overseas students back from Europe, the United States and South Korea. 2,2'-Bis(trifluoromethyl)-4,4'-diamino biphenyl