Website with subdomains and SEO

Question

Search Engine Optimization

There is a company website of the -site.ru format and 15 subdomains of branches, of the nsk.site.ru format. Texts of product catalogs and news on the site are the same. There is a feeling that Yandex does not really like such copy-paste. But to rewrite 6000 units. goods, too, do not want. what to do?

Answer 1

Register canonicals on all (!!!) domains for one (it will get into the search).
Example:
< link rel="canonical" href="http://site.ru/product/234225"/>
(remove spaces)

Answer 2

I want to have a normal result, but at the same time not do the work. Indeed, what should one do in such a situation?

Answer 3

If everything is the same, then why subdomains?

Answer 4

And what is the problem for different subdomains to generate titles according to a template, like "Irons in {Moscow|Kirov|Omsk}"? Is it the same in the product description? There will be a lot of pages sharpened for regions, without loss of requests and, one might say, without duplicates.