China is developing its education system with an emphasis on science, technology, engineering and mathematics (STEM); in 2009, China graduated over 10,000 PhD engineers, and as many as 500,000 BSc graduates, more than any other country. China also became the world's largest publisher of scientific papers in 2016. Chinese technology companies such as Huawei and Lenovo have become world leaders in telecommunications and personal computing, and Chinese supercomputers are consistently ranked among the world's most powerful. China has been the world's largest market for industrial robots since 2013 and will account for 45% of newly installed robots from 2019 to 2021.