Professional Customer Services System

　　You become a Guohao Yongsheng customer whenever you have a question or request for windows or doors. Guohao Yongsheng  employees would like to provide you with superior services, anywhere and anytime.

Timely response, accurate solution and excellent on-site services are the service principles Mylch employees embrace:

·Five year warranty for major parts of  Guohao Yongsheng windows and doors products for both parts and labor;
·After the expiration of product warranty, only parts cost will be charged;
·Professional maintenance: we will take care of everything after you call our customer service hotline;
·Self maintenance: You will receive reminder from  Guohao Yongsheng every year. Please refer to the manual for maintenance instructions.

Customer Service Hotline Provides the Following Services:
·Catalogue request
·Product inquiry
·Price quote
·Customer complaints
·Application for on-site services
·Tracking of shipping, transportation and invoices