What does the radiation zone at Huanggang Port in Shenzhen mean?

Areas where agricultural materials such as chemical fertilizers are concentrated in production and use. The radiation area of the port is the centralized production and use area of agricultural materials such as chemical fertilizer, and there are many chemical fertilizer production enterprises around it. According to statistics, the fertilizer production capacity in this area is 10 million tons. Huanggang Port is the largest and only land port with all-weather customs clearance in China. It will be built into a modern national first-class port that radiates Greater Bay Area and faces the world, integrating entry and exit ports, three-dimensional comprehensive transportation hubs and urban dynamic public spaces. Xinhuanggang Port has a huge scale, with a total land area of about 87,500 square meters and a total construction area of about 674,700 square meters, with five floors above ground and four floors underground, exceeding the sum of the other six ports in Shenzhen. The new port is positioned as a comprehensive transportation hub-type pure travel inspection port. It is estimated that the peak daily passenger flow will reach 300,000 in 2035 and 400,000 in 2050.