This article presents a part of the results of a broader analysis aimed to examine the impact of intra-industry trade flows of the new EU member states (the EU-10) on their adjustments to the requirements of the single European market. For the purpose of the analysis, the period covered was broken down into two stages, i.e., the years 1995–2003 (the period before the accession of the countries concerned to the EU) and 2004–2014 (the post-accession period). The stage 2004–2014 was further divided into the years 2004–2008 (before the crisis) and 2009–2014 (after the outbreak of the world crisis). An important factor taken into account were the differences in trade conditions resulting from the liberalisation agreements signed by the countries concerned and, after 2004, from their adoption of the EU common commercial policy rules. The countries under examination were divided into two groups: the EU-15 and the EU-10. The analysis of the intensity of intra-industry trade was based on the aggregate multilateral IIT index computed at the 6-digitCN code level in accordance with the Grubel-Lloyd formula. The article ends with a summary of the most important conclusions from the presented analysis.

This article presents a part of the results of a broader analysis aimed to examine the impact of intra-industry trade flows of the new EU member states (the EU-10) on their adjustments to the requirements of the single European market. For the purpose of the analysis, the period covered was broken down into two stages, i.e., the years 1995–2003 (the period before the accession of the countries concerned to the EU) and 2004–2014 (the post-accession period). The stage 2004–2014 was further divided into the years 2004–2008 (before the crisis) and 2009–2014 (after the outbreak of the world crisis). An important factor taken into account were the differences in trade conditions resulting from the liberalisation agreements signed by the countries concerned and, after 2004, from their adoption of the EU common commercial policy rules. The countries under examination were divided into two groups: the EU-15 and the EU-10. The analysis of the intensity of intra-industry trade was based on the aggregate multilateral IIT index computed at the 6-digitCN code level in accordance with the Grubel-Lloyd formula. The article ends with a summary of the most important conclusions from the presented analysis.