Plock (Poland) is now the best place for invest and business in East-Central Europe.

Investment Opportunities in Plock Industrial and Technological Park:

http://www.paiz.gov.pl/investment_support/ind...

Citation from PKN Orlen website:

PKN ORLEN is a Polish company and one of Central Europe’s largest refiners of crude oil. We specialize in processing crude oil into world-class unleaded petrol, diesel, heating oil, and aviation fuel as well as plastics and other petroleum related products.

We hold licences for onshore and offshore oil and gas exploration throughout the country. One of our shared priorities is to appraise and exploit natural gas from unconventional plays. Our adopted development direction is to transform PKN ORLEN into a multiutility complex with a foothold in the power generation business.

PKN ORLEN operates 7 refineries, of which 3 are located in Plock, Trzebinia and Jedlicze (Poland), another 3 in Litvinov, Kralupy and Pardubice (the Czech Republic) and 1 in Mazeikiu (Lithuania). The total deep processing capacity of the refineries reaches 31.7 million tonnes per annum (PKN ORLEN share). In 2011 all the ORLEN Group refineries processed 27.8 million tonnes of crude oil.

Main refinery (and petrochemistry) of PKN Orlen - Plock (PKN Orlen website):

http://www.raportroczny.orlen.pl/report_en_re...

Citation from Ministry Treasury:

Largest companies in Poland and Central Europe in 2012 – the balance of power and how it changed
Central Europe’s top 10 companies – PKN Orlen remains on top, Lotos joins the exclusive club

Poland’s state-owned fuel group PKN Orlen retained its position as the largest company in Central Europe in terms of sales revenues, according to 2012 Central Europe Top 500 ranking by advisory Deloitte. The runner-up was Hungary’s energy group MOL and the third place belonged to Czech car producer Skoda, with both of the firms also remaining on the same position as in the year prior.