mandatory for: small-medium company; short adaptable fast 短平快？？ little investment but quick result. easy to handle, to estimate. e.g. search engine; wechat vip official account(kol and social distribution社交分发); apps(应用市场), among which, the premium traffic are gathered in baidu, tecent especially wechat and QQ. for mobile terminal, the most important are wechat, weibo and Toutiao. for apps/applied market, baidu91, 应用宝， 360.
1, search engine: baidu adwords need a specific team to handle the keyword paid listing etc.
2, 联盟广告: 百度网盟，搜狗网盟，360网盟，谷歌网盟？？？
3， 导航ad, hao123, 360导航，...
4, super ad platform, 广点通，sina fan tunnel, Toutiao
5，T类展示广告：腾讯网, sina, 网易，凤凰, 适合品牌主