test runs on an 820-meter-long test track at their headquarters in Sengenthal, Upper Palatinate, Germany, since 2012 clocking over 100,000 tests covering a distance of over 65,000 km as of 2018. In 2018 Max Bögl signed a joint venture with the Chinese company Chengdu Xinzhu Road & Bridge Machinery Co. with the Chinese partner given exclusive rights of production and marketing for the system in China. The joint venture constructed a demonstration line near Chengdu, China, and two vehicles were airlifted there in June, 2020. In April 2021 a vehicle on the Chinese test track hit a top speed of . China, 2000-present According to the International Maglev Board there are at least four maglev research programmes underway in China at the following institutions: Southwest Jiaotong University (Chengdu), Tongji University (Shanghai), CRRC Tangshan-Changchun Railway Vehicle Co. and Chengdu Aircraft Industry Group. The latest high speed prototype, unveiled in July 2021, was manufactured by CRRC Qingdao Sifang. Low-to-medium speed Development of the low-to-medium speed systems, that is, , by the CRRC has led to opening of operational lines such as the Changsha Maglev Express in 2016 and the Line S1 in Beijing in 2017. In April 2020 a new model capable of and compatible with the Changsha line completed testing. The vehicle, under development since 2018, has a 30 percent increase in traction efficiency and a 60 percent increase in speed over the stock in use on the line since. The vehicles entered service in July 2021 with a top speed of . CRRC Zhuzhou Locomotive said in April 2020 it is developing a model capable of . High speed There are currently two competing efforts into high-speed maglev systems, i.e., . The first is based on the Transrapid technology used in the Shanghai maglev train and is developed by the CRRC under license from Thyssen-Krupp. In 2006 the CM1 Dolphin prototype was unveiled and began testing on a new test track at Tongji University, northwest of Shanghai. A prototype vehicle of the CRRC 600 was developed in 2019 and tested from June 2020. In March 2021 a model began trials. In July 2021, the CRRC 600 maglev, capable of travelling up to , was unveiled in Qingdao. It was reported to be the world's fastest ground vehicle. A high speed test track is under development in China and also, in April 2021, there was consideration given to re-opening the Emsland