1. Packed in case ,it is convenient to take . which is necessary to show business and research meeting. 2. Adopt its grade imported PET fabric ,High definition, high gain , suits to show data and ting stracture. 3. Fold and unfold freely. It can be setted on a table. Simply pull down the 4 legs and lock into place. Pull apart the casing to extend the scree. 4. It is suted for various locations such as business affairs, show ,minitype convention etc.