"Dongfanghong 3 is a new generation of scientific research internship ship developed by China's independent innovation and research, the first domestic and the fourth international comprehensive marine research vessel to obtain the SILENT-R certificate, and the world's largest marine research vessel with the largest displacement to obtain this level of certificate, as well as the world's largest silent scientific research vessel. HUJI supplied low-noise air purification and air-conditioning equipment for this vessel.