If you encounter any problem with your monitor, please call TCL customer service hotline 4008-123456 for assistance.nationwide 72-MC2500-001O P E R A T I O N M A N U A LThis unit is with multi functions, so for best performance please read the instructions carefully before your operation.:Product Implementation Standard No.:Q/WP1034-2005Q/WP1034-2005QB/44130033952-2005QB/44130033952-2005:Product Standardization File No.:No.19 District, Zhongkai High-tech Develop-ment Zone, Huizhou City, Guangdong ProvinceTCL4008-123456MC25COLOR MONITORCOLOR MONITOR