国产欧美日韩三级,日韩a一级欧美一级,韩国美女高清爽快一级毛片,国产人妖在线,在线精品自拍,精品一区二区三区在线视频,一区二区三区视频网站

Company News
The engineering method that declared by our group wins the national first-grade

 Recently, three of four state-level engineering methods that declared by our group have been approved, which contain the national first-grade engineering method “the construction method of cambered ceramic plate curtain wall with adjustable cantilever, without beam” (co-edit with Shandong NingJian), the national second-grade engineering method “the construction method of hyperboloid Aluminum single board curtain wall with squama style installation” (co-edit with Shandong NingJian) and “the construction method of UF cast-in-place and thermal insulation” (co-edit with Shandong Wanxin).