On April 23, 2021, the Board of Directors of Truong Thanh Energy and Real Estate JSC approved to cooperate with Dong Duong Thang Long Investment and Construction JSC to prepare and implement Hoi Van Hot Spring Project in Hoi Van hamlet, Cat Hiep commune, Phu Cat district, Binh Dinh province. Accordingly, Truong Thanh Energy and Real Estate JSC will contribute 60% of total capital of the project, and Dong Duong Thang Long Investment and Construction JSC will contribute 40%.