TOKYO - Japan's largest consumer electronics retailer Yamada Holdings Co. and Edion Corp., another key player in the sector, are planning to merge their businesses under a new holding company, a source familiar with the matter said Thursday.

With combined sales of around 2.5 trillion yen ($15.63 billion), it is hoped the envisioned business integration will strengthen their product development capabilities and accelerate efficiency as the market contracts due to Japan's declining population.

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