Thien Thanh has a tradition of making flavored tea since 1943 from Quy Nhon, Binh Dinh.
By 1982, when the state started to allow free trade business, Thien Thanh Tea Facility with Nai Vang brand was established at 512 Tran Phu, Ward 2, Bao Loc Town, Lam Dong Province..
In 1997, the company was officially granted the business registration certificate by Lam Dong province.