OKAYAMA (Japan) (AFP) European bronze medallists Poland beat Taiwan on Friday to keep their unbeaten record in the World Grand Prix womens volleyball tournament series. The Polish women, who finished with three wins against no defeat at home in the first week, rallied to a straightforward 25-16, 25-19, 25-15 win in just over an hour. In the second match of the four-team round robin here, Asian bronze medallists Japan, who had a 2-1 win-loss record in the first week, outclassed Germany 26-28, 25-17, 25-20, 25-11. The Germans, who were fourth to Poland in the European championships, narrowly won the leapfrogging first set, but the Japanese took an early lead in the last three to hold on to victory. Twelve teams are taking part in the three-week preliminary round competition. Top five teams and hosts China will advance to the final round to be played in Ningbo from August 25-29.