The prior selection of suppliers provides an organisation with a first impression, but this is not sufficient to award a firm contract. The evaluation of a supplier includes the evaluation of:
Facilities.
Technical ability.
Production capacity.
Quality requirements: facilities, staff, methodologies, environment, etc.
Logistics capacity.
Compliance with other types of requirements: environmental, occupational health and safety, social responsibility, etc.
Product quality, including the taking of samples and testing in an independent laboratory.