Second, we analysed the main characteristics of each type of
strategy in the supply relationship context. The diverse
purchasing strategies have essential differences. A distinctive
feature among the strategies is their emphasis on either
efficiency or effectiveness. In some companies, purchasing
raw materials, services, components, and relevant parts to the
manufacturing process may account for 50-80 per cent of
production expenses (Ha°kansson, 1989; Dubois and Gadde,
2000). Thus, managers become easily focused on cost
reduction activity (Macbeth, 1994). However, an emphasis
on operational efficiency is not the only objective of
purchasing strategy. Another objective is effectiveness, in
order to ensure future business potential for the company. In
this case, relationships focus on constant improvement and
are characterised by innovation activity (Macbeth, 1994).