[4.1如何接入应用](4.1%E5%A6%82%E4%BD%95%E6%8E%A5%E5%85%A5%E5%BA%94%E7%94%A8.md) [4.2SDK在哪里下载](4.2SDK%E5%9C%A8%E5%93%AA%E9%87%8C%E4%B8%8B%E8%BD%BD.md) [4.3微信如何接入](4.3%E5%BE%AE%E4%BF%A1%E5%A6%82%E4%BD%95%E6%8E%A5%E5%85%A5.md) [4.4定制SDK在哪里](4.4%E5%AE%9A%E5%88%B6SDK%E5%9C%A8%E5%93%AA%E9%87%8C.md) [4.5定制SDK与标准SDK有什么区别](4.5%E5%AE%9A%E5%88%B6SDK%E4%B8%8E%E6%A0%87%E5%87%86SDK%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB.md)