For servicing industry with human as the main concern, it is vital to have an independent, comprehensive quality assurance mechanism in order to maintain high level of service, in which rule-of-man style and subjectivity in the old days can be eliminated. In view of this, WHHK has established an evaluation mechanism with mutual assessment by internal and external teams of professionals audits. In order to achieve a set standard of service and customers’ satisfaction, our work is monitored and reviewed in various aspects including provision of resources, training, infrastructure and working environment, with customers’ expectation as the foundation. For services that are not up to high standard, remedial action will be advised and implemented with continuous improvement follow-through. Also, preventive measure will be formulated as future guidelines.