Their work ranges from providing input on improving production processes, to finding solutions to problems, and to fielding complaints from customers. This helps PTTGC to better satisfy its customers while addressing their needs. Efforts such as these are conducted according to the principles of Good Corporate Governance and Business Code of Conduct. PTTGC places special emphasis on providing solutions to customers whose products are still under warranty or time-sensitive conditions. A system is in place to receive complaints regarding PTTGC products and services to meet customer needs in an expedient and fair manner. Complaints are fielded through a number of different channels including PTTGC's Website, email and telephone. There is also a Customer Relations Management (CRM) system operated by a team dedicated to these efforts. Not only does this team work to ensure a solution is found for each complaint raised, it also ensures that the source of these complaints is eliminated and prevented from happening again. Complaint monitoring and assessments are a regular part of PTTGC operations. In addition to what has already been laid out in the Corporate Governance Handbook, additional principles apply to these efforts such as Marketing Excellence and maintaining a Customer Centric approach. Customer satisfaction surveys are held on a constant basis. PTTGC representatives regularly make site visits to customers to see its products in use, while also taking notes of any customer concerns and opinions on the challenges each customer has recently been through.