Japanese conglomerate Toshiba Corp will maintain an annual investment of around 200 billion yen ($1.9 billion) into its chip business beyond the current business year, Chief Executive Hisao Tanaka said on Tuesday. Speaking at the opening ceremony of its chip fabrication plant No. 5 in Yokkaichi, western Japan, Tanaka also said the company was seeking operating profit of more than 200 billion yen in the current year, which ends in March 2015. Tanaka said boosting sales and profit in Toshibas semiconductor unit was a greater priority than becoming No. 1 in the NAND flash memory chip market, where Korean rival Samsung Electronics Co Ltd is currently top, ahead of Toshiba. Toshiba built Fab No. 5 along with chip partner SanDisk Corp, splitting the cost evenly.