What is the system of Rizhao International Ocean City Investment and Rizhao City Investment?

Rizhao is a prefecture-level city in the southeast of Shandong Province, located on the coast of the Yellow Sea and the southeast wing of Shandong Peninsula. It faces Japan and South Korea across the Yellow Sea in the east, Linyi in the west, Qingdao and Weifang in the north and Lianyungang in Jiangsu Province in the south. The city has a land area of 53 10 square kilometers and a sea area of 6,000 square kilometers, and governs Donggang District, lanshan district, Juxian County, Wulian County, two districts and two counties and Rizhao Economic and Technological Development Zone. Rizhao is known as "Water Sports Capital" and "Oriental Sun City", with beautiful environment, and it is one of the livable cities of the United Nations.