Hook type shaped screen ceiling, by way of the plate to form a one-way screen level vision ;bright and elegant lines ,choose the appropriate height and viewing angle .Which can produce curtain effect .Its maintenance is less restrictive ,so that thousands of design changes , the entire building room spacious and transparent. It is manufactured by aluminum alloy plate or plate with punching holes, painted through electrostatic powder spraying ,is a combination of open structure design, with function of fireproof ,moisture-proof ,noise-absorbing function ,the surface and the lines are as a whole and with strong coherence ,the plug- in installation method makes it convenient for the maintenance of other facilities located in the roof .Both sides visible many be made in same color for both sides or different color on each side as customize designed ,matched with lighting design ,it can be assembled with more beautiful decorative effect, It can also adjust the visual height of the house ,producing a curtain effect. Used in office buildings, office ,corridors, airports, railway stations , factories, hospitals, clubs, banks ,shopping malls ,exhibition halls and so on .