***生产闭口楼承板，钢承板，组合楼板，压型钢板/设计/安装开口式楼承板YX76-344-6883W-YX76-305-915YX76-200-600YX76-230-690YX76-313.4-940YX76-295-880YX70-200-600YX51-240-7202W-YX51-305-915YX51-226-678YX51-250-750YX51-342-1025YX51-254-760YX75-350-700)