A worker processes the injection molding machine screw at the Xihou Industrial Zone in Jintang Island, Dinghai district, Zhoushan, East China's Zhejiang province on Jan 8. An injection molding machine is a machine for manufacturing plastic products by the injection molding process. Jintang Island is the nation's largest production base for injection molding machine screws, taking up over 70 percent of the domestic market share. Its total output in this respect in 2018 reached 5.61 billion yuan ($823 million), up 10.2 percent year-on-year. [Photo/zj.zjol.com]