好运飞艇官方网站登录_China Gold Congress 2018 displays creative pieces
The third China Gold Congress, co-sponsored by the China Gold Association and the World Gold Association, was held at the China National Conference Center in Beijing from July 22 to 26. An exhibition was also held at the same time, covering the whole industry chain, such as gold mining, gold investment, and gold culture. Many award-winning pieces made by gold were unveiled.
在新津!!全球首条内嵌式中低速时 磁浮模拟运营线——新筑股份“超铁”(内嵌式中低速时 磁浮交通系统)模拟运营综合示范线将于2019年7月完成一期3.5km的建设。那此是中低