H50S Projector screen Features: 1. Special support shaft structure with national practical patent applications makes curtain lift smooth staying at any height and adjusts visual area, compatible 4:3, 16:9 and 16:10 proportion 2. Strengthen end cover with the high strength PC material to ensure putting the curtain smooth, sturdy and durable, and on the side insert silver decoration article, correspond to the middle ring-pull 3. Switch with high strength PC material, outting slot with stiffener, high strength, not easy to break, guarantee the long-term repeated use 4. Exclusive design oval ring-pull, easy to pull up table screen, silver ring-pull with black housing, elegant atmosphere 5. High strength aluminum tube connection end with PC material and a metal tube to guarantee the stable structure, durable 6. The curtain can stop at any height
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