In mid 2020 Tran Thien Khanh, LLC established a new secondary company with the name Den Saigon.  Den Saigon Company mainly operate on managing and manufacturing new invention LED Manicure Lamps and other new invention products for nails salons and other beauty salons.  Den Saigon is a startup company originating from the St. Louis Metropolitan area, focused around providing assistance to and protecting nail salon technicians and clients.  Den Saigon Company has developed an improved and more efficient Manicure Lamp, incorporating a vacuum and ventilation system to prevent polish fumes and also other toxic chemical vapors of nails products from reaching customers and technicians.