Another important reason that is stated for the increase in efficiency is that of the low volume of productions. Companies such as Nissan and Toyota were more focused on quality. They were interested in what is called the small lot productions. Toyota and Nissan after World War II found the need to expand, but also had to expand in such a way that they produced products with quality but of a small volume. Applying the OLI framework, even in internationalization the companies still followed their small lot production. The US automakers worked on the mass production philosophy while Japanese automakers were focused on the small lot philosophy. Because of the production in small lots, Nissan and Toyota were able to produce a wider variety of models. An important aspect of the competitive advantage is that of differentiation. Japanese automakers were able to minimize costs and maximize product diversity. The main competitors of the Japanese firms were focused on maximizing economies of scale by ensuring a minimal diversified set of automobiles were manufactured. This was in direct contradiction to what Nissan and Toyota focused on (Cusumano, 2013). However, this did not mean that the companies never made use of mass production techniques. They used it differently. The existing mass production system allowed for the production of many parts in a faster way. US manufacturers produced these parts and then stored them to meet the necessary market demand as and when necessary. On the other hand, Japanese manufacturers started making use of those very components to meet differentiated demand in the market. For instance, in the years before the Second World War, Japan brought expensive equipment from the United States in order to set up some of its plants. The purchase of the equipment meant that Japan would have more extensive use of the equipment compared to using it at its multinational site. This was achieved by a direct agreement that Nissan made with Graham-Paige. Once the operations were completed the demands increased for trucks and engines in the Japanese army. Japan met this demand by making use of the components manufactured at said plants. However after World War II the demand for army market went down and hence most of the Japanese manufacturers were focused on making buses, trucks and cars. The same equipment used for the purpose of manufacturing for a target sector soon grew to include a more diversified sector. Even diversified products such as the passenger vehicles were seen to require many more changes such as in the options for passengers. Companies such as Nissan and Toyota produced basic models for the customers and then went on to improvise basic models such that there was better differentiation. The competitive strategy used by the companies in the form of low volumes was actually helpful as the companies could test out efficiency strategies.