FS composite free of outside heat preservation formwork equipment has the following characteristics：

1) design and construction technology is simple and easy to popularize to large area. Cast-in-situ concrete frame (cut) box structure form of bearing structure remains unchanged, the current standards of the beam column and shear wall is still design, design standards and calculation software is complete, the construction technology of mature, easy to popularize to large area

2) to achieve the integration of technical requirements, the aim of building insulation and structure with life. Will permanently composite insulation outside template (cut) box structure and framework of beams and shear wall cast-in-place concrete members casting together, and through the nut with "sheep" Angle fitting strong connection (0.5 Mpa), tensile capacity, to achieve the synchronization design, synchronous construction, synchronous acceptance of technical requirements, the aim of building insulation and structure with life.