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Thank you for the explanation. very clear and that is what i want know.

Knowing my history, what we are and we do, you guys think that this 3 Keywords are the best to target?, or do you have any suggestion. thanks a lot.

Hello, I Want Help my company with our webpage we are "manufacturers" and "wholesale Suppliers" our products are "Transponder Keys", "Automotive Door Locks".

On my keyword research on Adwords I Found

"Transponder Key"  = 1600 Exact Global Searches so, long tail Keywords like "Transponder Key Manufacturer" have less Searches but are less competitive.

I´m trying to Target

"Transponder Key Manufacturer""Transponder Key Supplier"
"Transponder Key"

Main Question, when you do SEO for webpage, all your seo campaign goes for 1 webpage, example

www.example.com/new_seo_content.html

or one page for groups of similar keywords like

Transponder key, transponder key manufacturer, transponder key supplier