According to this model the entire company must be involved in the achievement of the ultimate goal: total quality. Beginning in 1987, were defined rules aimed at establishing the necessary requirements to a quality approach that develop in eight principles:
- Customer orientation
- Involvement of people
- Process approach
- System approach to management
Continuous improvement through: update, listening relationship with the customer, every little improvement wherever possible, process control, innovation Decisions based on factual data: sales analysis, statistical and marketing analysis, feedback from customers, macro and micro economic indicators Mutually beneficial relationships with suppliers.