... -quality fabric offers clear and vivid image.8. The alloy tripod is stable, nice and convenient to ... :1. Alloy frame body, advanced supporting, the beautiful of shape, the robust of supporting2. The easy with starting, easy firm, elastic moderate3 ... , saftyApplication:Can be used in the fluidity of narrow space such as video hall , exhibition hall, the teacher, meeting rooms, etc MechanismMutual ...