亚洲制服丝袜第一页,色婷婷综合久久久久中文,欧美在线91,精品欧美成人高清视频在线观看,91这里只有精品,九九久久免费视频,99视频精品全部免费观看

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).