Vietnam LED market should focus on low-end segment: scientistsVietNamNet Bridge - The domestic LED (light-emitting diodes) market has been developing rapidly but chaotically in recent years. The LED market has been developing rapidlyNguyen Phan Kien from the Hanoi University of Science & Technology said that until 2014-2015, LED development in Vietnam had gone slowly. LED lamps are now made by Vietnamese companies Rang Dong Rang Dong Light Source & Vacuum Flask JSC and Dien Quang Lamp. However, Bac said that the LED market is now in chaos with uncontrolled product quality, origin and price. LED lamps are now made by Vietnamese companies Rang Dong Rang Dong Light Source & Vacuum Flask JSC and Dien Quang Lamp.