Similar relationships characterize the third type of corporate group, which was established around a major industrial producer. Members of this group are often subsidiaries or affiliates of the parent firm or are regular subcontractors. Subsidiaries and contracting corporations normally build components for the parent firm and, because of their smaller size, afford several benefits to the parent. The larger firm can concentrate on final assembly and high value-added processes, while the smaller firm can perform specialized and labor-intensive tasks. Cash payments to the subcontractors are supplemented by commercial bills whose maturity can be postponed when the need arose. In the late 1980s, subcontracting firms accounted for more than 60 percent of Japan's 6 million small and medium-sized enterprises (those having fewer than 300 employees).