Yamato Housing-Achieving the world's highest UA value of 0.26 (equivalent to HEAT20: G3) for the first time-Opening a model house with a roof terrace full of openness - https://re-how.net/... https://imgs.plurk.com/Qy9/ngP/nEqVP1bxvTIHYZwTr3BvloEH2IG_lg.jpg