Dear Sir or Madam, We, GRANDVIEW, originated in Canada, ISO certified, are the most famous projection screen manufacturer in China. Partner of world-famous French SOMFY Motor, and using US-manufactured screen fabrics, we provide products with both good quality and competitive price. Our products are CE and UL certified, and with one year’s warranty. We are also OEM partner of famous Audio Visual companies, such as INFOCUS, KIKUCHI, EIKI, OPTOMA, etc. For further information, please visit our website at: http://www.grandviewscreen.com