Semi-automatic models manually retractable stairs at home and abroad is relatively easy to use products, equipped with safety locks, automatic closed automatically lock the door to prevent accidental removal, security better. Refined aesthetic appearance, space-saving, solid structure, easy to install, suitable attic, shops, villas attic storage room and other places need to cut off and up and down. Stairs safe use clever design, a special S curved handrails, special non-slip pedals, high-quality hardware accessories, to maximize the protection of the user's safe to use. Our pioneering and innovative, yet affordable. After stepping spray steel surface quality, durable deformation. This staircase is manually pulled up stairs, simple and bright, nice, is the attic floor, the best choice! Gently pull when needed, the exquisite beauty of the attic stairs immediately apparent in your eyes, for floors can be within 3.2 meters. 1. Steel wooden frame to ensure the overall safety of the whole forming a stepping width 400 mm, total width 430 mm ladder. 2. The solid structure maximum bearing weight 200kg, 600kg experiment under pressure do not see any permanent damage. 3. thick rubber corners to protect the floor from damage. 4. Easy to install. 5. autocratic wooden door hinge support Yasumasa switch flexibility, from the outside, the wood surface is completely flat, I do not see any fastening member. 6. Polyurethane seal reduce the switching voice, but also to ensure an airtight and down. S bend is rounded shape, smooth and delicate, S bend is the use of high-strength GB 2.0mm thick high-quality steel stamping. Stepping surface is planar pattern shape, with 1.5mm thick national standard quality steel stamping, 400mm wide and 100mm long-run high within each step 250mm, border and stepping are steel, the surface electrostatic spray. The total thickness of door 30mm, PVC edging. Downstairs not see screws on the door, a triangular configuration with increased dedicated hinge piece replaces the traditional hinge, equipped with self-closing devices, two hydraulic rod, two springs, the use of lighter and more stable and more safer and more beautiful. The maximum safe load of 200 kg. Colors: white, dark gray, orange, sky blue, white and other colors can be white. Surface treatment: mechanical polishing, acid phosphate, electrostatic spray hole size: 700 * 900 700 * 1000 700 * 1200 Other sizes can be customized to adapt height: 0.8-3.2 meters