Thang Long Elevator Group (TLE) was established in 2001, after nearly 20 years of operation, the Group has become a leading enterprise in the field of providing building equipment in the Vietnamese market. Initially conquering customers in the field of providing and installing escalators, by striving to improve service quality and diversify products provided to customers, TLE continues to assert itself in central air-conditioning business, manufacturing and exporting wooden furniture, construction consultancy, interior and exterior. The number of employees of TLE is nearly 2000 people with 4 companies in the group system including: Thang Long Elevator Equipment Group Co., Ltd., Viet Phat Thang Long Co., Ltd. Thanh Thang Thang Long, Thang Long Hanoi Architectural Joint Stock Company.

Viet Hong Trading Joint Stock Company is believed to be the contractor of Hyundai aluminum system with facades combined with top hung windows, reflective insulating glass with a thickness of 22.38mm.