Background
Mr. Chang was born in Poyang, Kiangsi, 1894.
Mr. Chang was born in Poyang, Kiangsi, 1894.
Chang C. Y. received his advanced education in science in America and graduated from Cornell and Ohio Universities, with Master of Arts and Doctor of Philosophy degrees respectively.
Mr. Chang was a senior technical expert to the Ministry of Industry and concurrently director of the chemistry department of the Central Industrial Laboratory at Nanking since 1930.