亚洲AV成人片在线|韩日在线一区AV人人操|中文字幕日韩色2009网站|久久香日本电影网|国产精品国产三级国产AⅤ无密码|a片在线免费国产特级片|精品久久久久久黑人无码中文字幕|免费能看的黄片一级黄片A|国产91欧美性爱|国产日韩亚洲av

Home/News/News

News

Tsingshan QN successfully “moved into” the world’s first stainless steel core board building

Time:2021 01 21

Visits:7,144

Recently, the “Technical Standards for Stainless Steel Core Board Building Structures” successfully passed the expert group review,which was edited in chief by the China Urban Science Research Association, Broad Construction Technology Co., Ltd. and Hunan University, and was jointly compiled by Tsinghua University, Southeast University, Tongji University and Tsingtuo Group. Hundreds of tons of high-strength QN series stainless steel of Tsingshan’s first invention were successfully applied to the world’s first stainless steel core board building, achieving a historic breakthrough.