South Korean Construction Company GONGGANTECH Korea has develops construction safety technology and products based on 20-year know-how and experience in the construction industry. Earthquake-Resistant Ceiling lightweight Steel Frame surpasses the limit of existing lightweight products, which have been used and presents a new paradigm of lightweight steel structure. Existing products have been used even before the various equipment such as electricity, firefighting, communication, air conditioning, heating, and interior were installed in the ceiling. But those products did not consider the weight of equipment mentioned above and workers’ weight for maintenance work, exceeding the load capacity, which can cause safety accidents. Also, their earthquake-resistant performance is inadequate, possibly causing damages due to the fall of ceiling structure and equipment when an earthquake occurs. YES Hanger, which is the key element to ‘Earthquake-Resistant Ceiling lightweight Steel Frame’ features a one-touch installment that completely prevents loosening of the nuts on upper and lower parts of the hanger. And it also blocks the moving of angle bars and carrying bars on the upper area to prevent changes in structure and sagging ceiling due to earthquakes and various vibrations in daily life. It was tested and proved for earthquake resistance in the international standard earthquake resistance test site in Korea’s Center for Seismic Safety. And it was confirmed that the structure remains safe even in 1.3g and seismic intensity 10. In addition, the product structure evenly distributes the weight to remain strong against vertical load and stably supports equipment and the weight of workers in the ceiling, preventing accidents like ceiling collapse. Its maintenance is also convenient. The integrated structure of Yes Hanger increases safety against earthquake and load without the need for combining pins. The simplified process of assembling the parts increases convenience. Using M bar, T bar, and clip bars, it is applicable to various shapes of ceiling and construction environment. Furthermore, ISO9001 quality management certification proves that it is a versatile product that never fails in quality management.