When the results that have been achieved are considered satisfactory, a pre-series production is undertaken in the plant. This allows verification that the products manufactured in the final production process comply with project specifications, as well as the various supply specifications required by the customer.

Pre-series production, which is carried out using the final manufacturing equipment on the proposed production line, marks the beginning of product and process validation both aspects are subject to careful quality control.

This allows the plant committee, supported by engineers from the Research & Development laboratory, to carry out an initial review of the effectiveness of the production processes that had been previously planned. At this stage a verification is carried out to ensure that process variables are under control, based on accurate measurements and using appropriate statistical methods.

Any deviations or problems that are found generate immediate feedback regarding the project, in addition to the necessary corrective action being taken in relation to the product, processes and suppliers.