Wehag is committed to integrating high-quality global resources to provide professional windows and doors system hardware solutions for high-end users. In order to ensure the service quality to end users and differentiate from traditional sales models, Wehag adopts a limited VIP service system. This system selects a certain number of member customers based on the comprehensive evaluation of the customer's business scale, channel coverage, and service quality to the users, and provides them with exclusive products and services.