On 28 September, 2020, Jiangxi's first 7545 rare earth magnesium alloy square ingot co-developed by Longnan Longyi Heavy Rare Earth Technology Co., Ltd. and Northeastern University materials electromagnetic process research MOE key laboratory was finished in the casting workshop of rare earth nonferrous metals business unit of Longyi Heavy Rare-Earth Technology, marking a staged achievement of the company in rare earth lightweight alloy field and laying a solid foundation for the company to further develop rare earth magnesium alloy materials with independent intellectual property rights.