Help for start commerce in france

[gabri.loc]

Hello France mait!
I'm traveling the Asia and Oceania,now in Australia. I lookig for star commerce in France because the Italian law(where I came from)it's so complicade and expensive!
I find very good prodouct from China,Hi tech and I would like to export in your country.
Can somebody help me to understand your situation in douane (custom) and tax I have to pay in case?
I speake france but i can't write without mistake!
Thanks to everybody Gab