Hunan Residentail House is a new construction project which follow the concept of RESET. For example, we use Grillage Beam structure which not only reduce the thickness of the floor (save the material), but also reduce the ceiling decoration material. With the roof garden, well insulated window and Bayer PU insulation, this project has a good insulation performance which help energy saving. More importantly, the whole building use ZERO PVC material. How we make it? We use HDPE material (from Geberit) for the water draining, icon for the electric piping, copper for the rain drainage piping, ect.