'Includes' is a finite verb. 'Including' is a non-finite verb. Every sentence needs a finite verb; a non-finite verb alone is not possible.
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Anonymouscan't really tell whether i should put including or includes.Neither, because "products" is plural.
Anonymousmaybe there is a situation when we need ing?Nowhere do you 'need' it, but you can use it with other sentence structuring.