Tesla on Tuesday signed agreements with Shanghai authorities that will allow it to open a plant in the Chinese city with an annual capacity of 500,000 cars, local media reported.

The US carmaker signed agreements with the Shanghai municipal government, Shanghai Lingang Area Development Administration and Lingang Group, according to news website Knews, which is affiliated with state-owned Shanghai Media Group.

Tesla has been in protracted negotiations to open its own factory in China to help bolster its position in the country’s fast-growing market for electric cars and to avoid high import tariffs.