Jul 05, 2011. /Lesprom Network/. The total supply of plywood in the Japanese market in April was 533,100 cubic metres, some 28% more than in April last year and 19% more than in March this year, ITTO reported. There was a sharp increase in imports and domestic mills that were unaffected by the earthquake and tsunami increased production by almost 20%. April imports amounted to 337,100 cubic metres, 12% more than in April 2010. This was the highest monthly import level since October 2008 and over 75,000 cubic metres more than the average monthly volume for last year.