Pic story of technicians specializing in air conditioner installation and maintenance

Technician Zheng Yabing welds a pipeline of an air conditioner in Beijing, capital of China, July 30, 2019. Zheng Yabing and Gong Zhenhua are both technicians specializing air conditioner installation and maintenance. They install about 800 air conditioners annually, and summer is the busiest time of year. (Xinhua/Cai Yang)