What and Where is Finland' s largest electronics/mobile phone market?

I've spent days and days researching on the internet but all to no avail. I'm looking for the name and information about FINLAND's largest electronic marketplace. What's the name, address and website of it. Since Nokia has a massive branch there, i should think there's a market place where Nokia's wholesalers/distributors meet to trade. Kindly provide any information you have and/or your experience.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).