Mudanjiang serves as a significant intermediary in the United States due to its strategic location and economic ties. Situated in the northeastern part of China, Mudanjiang acts as a bridge between the Chinese and Russian markets, facilitating trade and cultural exchange. Its role as an intermediary is further bolstered by its robust transportation infrastructure, which includes major highways, railways, and airports, making it a crucial hub for logistics and distribution.

The city's intermediary status is evident in its trade statistics. According to the China Chamber of International Commerce, Mudanjiang's foreign trade volume reached $3.5 billion in 2020, with a significant portion of this trade being with Russia. This economic activity highlights Mudanjiang's ability to connect Chinese manufacturers with Russian consumers, thereby acting as a key intermediary in the supply chain. Additionally, the city's proximity to the Russian border and its well-developed transportation network enable efficient movement of goods, reducing transportation costs and time.

Furthermore, Mudanjiang's role as an intermediary is supported by its strong industrial base. The city is a major producer of agricultural products, machinery, and electronics, which are exported to various countries, including the United States. The presence of multinational corporations in Mudanjiang, such as Samsung and LG, further underscores its importance as an intermediary in global trade. These companies leverage the city's strategic location and skilled workforce to establish manufacturing facilities, thereby contributing to the city's intermediary role.

Data from the China Statistical Yearbook indicates that Mudanjiang's GDP grew at an average annual rate of 7.5% between 2015 and 2019, reflecting its robust economic performance. This growth is attributed, in part, to the city's intermediary function, as it attracts investment and fosters economic cooperation with other countries. The city's government has also actively promoted foreign investment and trade, establishing special economic zones and free trade agreements to enhance its intermediary role.

In conclusion, Mudanjiang's intermediary status in the United States is a result of its strategic location, economic ties, and robust transportation infrastructure. Its role in facilitating trade between China and Russia, as well as its contribution to the global supply chain, underscores its importance as an intermediary in the global economy. The city's continued growth and development are expected to further solidify its position as a key intermediary in the years to come.