What does n in a pan-2n mean?

2N: Clearing foreign exchange through customs. Shenzhen Yitong Enterprise Service Company (hereinafter referred to as Yitong) was established on 200 1, and established the first domestic outsourcing service platform for small and medium-sized enterprises, providing all import and export services for small and medium-sized enterprises and individuals through the Internet (that is, +IT), and applied for the national patent 033 in 2003. 20 10 and zhangjiagang municipal government jointly established Jiangsu Yidatong enterprise service co., ltd.