Supermarket chain Seiyu Ltd, Japan's fourth-largest by sales, plans to start in September using the inventory and distribution management systems pioneered by its US parent, Wal-Mart Stores Inc, according to the AFX news agency, which quoted the Nihon Keizai Shimbun as the source of the news.

The systems will initially be introduced at 150 stores in the Tokyo metropolitan area, automating orders for 5,000 to 6,000 items, the business daily said. The systems handle automatic restocking and supply chain management.

The supply chain management system lets warehouses monitor the production of private-brand products in China and elsewhere, as well as inventory levels in Japan, to prevent excessive ordering and overstocking.

Wal-Mart, the world's largest retailer by both sales and market value, owned a controlling 37.31% stake in Seiyu as of March.

In May, Seiyu said it will issue 58.479m shares to Wal-Mart via a private placement, boosting Wal-Mart's stake to 42.43%.