Beijing, Jun 9 (Youth.cn) - In a production department in Shandong Aolai Electric Technology Co., ltd, technicians were checking operation situations of mask aligners. These machines are used to research and development of quantum technology and nanodevices. A fingernail-sized chip can accommodate kilometers of circuitry and tens of millions of transistors. Under microscopes, their intricate layouts resemble sprawling city grids. These micro wonders empower computers, smartphones, and appliances. Photo/CFP