Chen Deming, a returned overseas Chinese from Singapore and a model worker in Shanghai, is an engineer of No.7 Textile Machinery Factory. With his with a deep love for socialism and exquisite technical skills, he devoted himself to the construction of the four modernizations. He was highly praised by the masses for his personality and professional. The "Z511" type "one-step" hosiery knitting machine developed by him won the "National Major Science and Technology Achievement Award".