This year marks the 80th anniversary of the victory in the Chinese People's War of Resistance Against Japanese Aggression and the World Anti-Fascist War. It was from this very place that the ...

EN 14992:2007+A1:2012 Precast concrete products-wall elements EN 14992:2007+A1:2012 预制混凝土产品-墙体结构 EN 14992预制混凝土墙体CE认证标准－适用范围 EN 14992:2007+A1:2012 欧盟标准适用于由具有致密结构的正常重量或轻质混凝土制成的预制墙体。