The full name of SKF is "Svenska Kullager-Fabriken" Chinese transliteration name "SKF"; SKF Group headquarters is located in Gothenburg, Sweden, is the leader in bearing technology and manufacturing. Sven Wingquist invented the double-row automatic ball bearing in 1905, and in 1907 founded Svenska Kullargerfabriken Swedish ball bearing manufacturing company, referred to as SKF, which is constantly evolving and serving the world. SKF is the world's leader in the rolling bearing industry. It has a global reach and operates in 130 countries around the world. It produces more than 500 million bearings every year and has a worldwide sales network. In addition, the SKF Group continues to focus on the research and development of the bearing industry, with an average of two new patents available every two days. The SKF Group is also the first bearing company to pass the ISO14001 environmental certification. The certification covers more than 60 manufacturing units in 17 countries. SKF maintains its leading position in the global bearing industry. At the same time, it has been developing the technology, products and services in many fields for many years, and has developed into a bearing company that is truly supply-oriented and creates greater value for users.