Densitron International Plc, the Biggin Hill, Kent-based computer supplier and display manufacturer suffered a sharp decline in low-margin high volume sales in Japan as pre-tax profits grew by 79% to ú1.1m on turnover that fell 18% to ú55.8m. The company, reticent at the best of times, was unable to provide a reason for this so we can only assume the poor Japanese figures, where turnover has fallen 44% to ú21.8m are due to the supply problems it has been suffering all year and that it predicted would be cleared by last July. Growth was strongest in the Densitron Microwave and Hitech Electronics subsidiaries. The board added a final halfpenny dividend to the halfpenny at the interim stage, giving a total the same as the previous year.