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Also done SEO, why your site ranking situation is not your competitors good? Look at these points, and then compare with your site, perhaps you can understand why.
1, compared to the text of your page, your code is too much (for example, nested tables, JavaScript)
2, your keyword density is too high
3, you piled up too many keywords
4, your homepage is a bridge page
5, the site's external links less than your competitors
6, your site's external link quality is relatively low
7, your site connected to a search engine penalty site
8, the external links to your site a large number of repeat
9, your website has no new content, update speed too slow
10, your content original too little
11, your site is very slow to open
12, you are using a dynamic URL
13, your site does not have a site map (this is mainly for some more pages of the site)
14, your navigation is based on the image
15, your site does not have an ALT tag or ALT tag does not make sense
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