China's customs administration has implemented a detailed regional classification system for goods origins and destinations in Jiangsu province, reflecting the region's advanced economic development. The Domestic Region Code Table demonstrates how economic prosperity directly correlates with administrative granularity - the more developed a region becomes, the more finely it gets subdivided.
Jiangsu leads the nation with 58 special economic zones , surpassing Guangdong's 55 zones and outpacing Chongqing (51) and Shandong (48). While Chongqing's high count stems from its municipal status encompassing numerous counties, Jiangsu's distinction comes from having the most economically mature county-level cities in China, many ranking among the nation's top 100 counties.
Economic Powerhouses Driving Regional Codes
The province's customs codes extensively cover prefecture-level cities including Nanjing, Suzhou, Wuxi, Changzhou, and Yangzhou, along with their subordinate county-level cities. Suzhou stands out with its highly developed Industrial Park and Hi-Tech Industrial Development Zone, where multiple economic districts create synergistic growth effects.
Jiangsu's landscape features numerous economic development zones and export processing areas that benefit from policy advantages and market demand. Zhangjiagang, a county-level city, exemplifies this with remarkably detailed customs codes covering its bonded area, bonded port, and bonded logistics park - clear indicators of its economic significance. Similar success stories emerge from Jiangyin and Changshu, cities that have thrived through sustained local policy support.
Regional Complementarity and Balanced Growth
The province demonstrates strong regional complementarity. While southern Jiangsu's counties dominate China's top 100 county rankings, northern and central regions like Haimen and Jingjiang have achieved remarkable economic growth in recent years. This balanced development continues optimizing Jiangsu's overall economic landscape.
The sophisticated classification of goods origins and destinations serves dual purposes: enhancing customs administration efficiency while providing valuable data for regional economic planning. As Jiangsu pursues high-quality development, experts emphasize the importance of inter-regional coordination to maximize resource allocation and propel the province's economic advancement.
