4399免费视频

建(jian)(jian)筑(zhu)工(gong)(gong)程施工(gong)(gong)總(zong)承包(bao)、鋼(gang)結(jie)構(gou)工(gong)(gong)程施工(gong)(gong)、建(jian)(jian)筑(zhu)幕墻工(gong)(gong)程施工(gong)(gong)、地(di)基(ji)與基(ji)礎(chu)工(gong)(gong)程施工(gong)(gong)、建(jian)(jian)筑(zhu)裝修裝飾(shi)工(gong)(gong)程施工(gong)(gong)。輕(qing)鋼(gang)結(jie)構(gou)、建(jian)(jian)筑(zhu)幕墻、裝修裝飾(shi)工(gong)(gong)程設計；鋼(gang)結(jie)構(gou)、網架(jia)、屋面板、彩鋼(gang)瓦制作、銷售、安裝。鋼(gang)材、機械(xie)設備及配件(jian)銷售（依法須經(jing)批準的項目，經(jing)相關部門批準后方可開展經(jing)營活動(dong)）