using System;

using HtmlAgilityPack;

​

public class Program

{

public static void Main()

    {

        string url = "https://best.aliexpress.com/api/load_ams_path.do?path=aliexpress.com/common/@langField/ru/c-women-content.htm";

        HtmlWeb web = new HtmlWeb();

        var htmlDoc = web.Load(url);

        var nodetest1 = htmlDoc.DocumentNode.SelectSingleNode("*//li[@class='sup-brand-item'][1]/a");  

        Console.WriteLine(nodetest1.Attributes["href"].Value); 

    }

}