When you receive a Complaint from a customer will continue to monitor and analyze the cause of problems with products and respond to customer problems and correction-prevention of recurrence.
The Complaint received from customers to monitor and analyze the causes of problems with the product and the customer response to the problem and the solution - prevent recurrence.
When the Complaint from customers are tested and analyzed the causes of the problems with the products and reply to customers know the problems and Solutions - to prevent recurrence