On November 23, 2019, the Board of Directors of Rangdong Light Source and Vacuum Flask Joint Stock Company approved to invest in the plant project of research, production, and commercialize products - Led I 4.0 lighting solution and high-tech electronic products at lot 7, High-tech Industrial zone 2, Hoa Lac Industrial zone, Thach That District, Quoc Oai District, Ha Noi City with total investment capital of VND 2,500 billion.