Incing plate Which is rool-pressed by inner and outer Double plates Filled with high-quality fire-resistant materials inner,and can be used keeping off fire independently,Can bearing in fire over three houre. Customers can also choose stainless steel slice.Or guide-groove and boottom frame,cooperate with decoration can have so much advantages Such as high capability in fireproof,High quality in airproof, ow noises.It's suitable for supermarket,Storage,Office,Hotel,Garage or any huge building. Technological standard: Technological standard:GB 14102-93 General technical conditions for steel fire resistant roller shuters Power supply:380V,50HZ Motor power contrast. 300kg 500kg 600kg 800kg 1000kg 1300kg 1500kg 0.18g 0.25kw 0.37kw 0.55kw 0.55kw 0.7kw 0.85kw Control characteristic and funciton 1.Controlled with writng program it's so advanced Conveninent and reliable. 2.It can be set stop pasition by random memory way under no fire condition,Which is more conveninent and accurate. 3.It has the function that while temperature sensitivity drop down completely,Or the smoke sensitivity Will delay to drop down about 5-240 seconds(Adjustable) 4.Many contact plugs are prepared,Which can be linked with fire centre and other reel curtains. 5.Infire conditions.Pressed any key,The curtain will stop at middle position,Delay to drop down for second time, To reach the goal to escape.