Hai Phong is a major industrial city and the third-largest in Vietnam. Hai Phong is also the center of technology, economy, culture, medicine, education, science and trade in the Red River delta. Haiphong has relationship of trading goods with more than 40 countries and territories around the world. Haiphong is striving to become one of the largest commercial centers of the country Hai Phong coast is over 125 km long, low and quite flat, Do Son sea water is a bit cloudy, but after reclamation, the sea water has become somewhat cleaner, with fine golden sand and beautiful scenery. In addition, Hai Phong also has Cat Ba island which is a world biosphere reserve with beautiful beaches, white sand, clear blue water and Lan Ha bays .... beautiful and interesting. Cat Ba is also the largest island in the Ha Long Bay area.