With most of its restructuring completed, Showa Shell Sekiyu K.K. is now focusing on stimulating customer demand by improving its products and services, according to John S. Mills, the new president of the country's fourth-largest oil wholesaler.

In the past several years, the Tokyo-based firm has spent heavily on restructuring and cost-reduction measures. While continuing these efforts, the firm will now focus on marketing, strengthening its retail network, and launching new products and services, according to Mills.

"A lot of basic restructuring has been done. We are switching the focus more to marketing" and boosting income, said Mills, 49, who became president and chief operating officer of the firm March 28.