The company was founded in 1987 by Ren Zhengfei. Initially focused on manufacturing phone switches, Huawei has since expanded its business to include building telecommunications networks, providing operational and consulting services and equipment to enterprises inside and outside of China, and manufacturing communications devices for the consumer market. Huawei had over 188,000 employees as of September 2018[update], around 76,000 of them engaged in Research & Development (R&D). It has 21 R&D institutes around the world, and in the late 2010s, opened the dedicated Ox Horn Campus. As of 2017[update], the company invested US$13. 8 billion in R&D.