پیام رییس انجمن بین المللی بتن آمریکا (ACI)
پیام رییس انجمن بین المللی بتن آمریکا (ACI) در خصوص همایش بهار امسال در شهر شیکاگو CANCELLATION NOTICE – ACI CONCRETE CONVENTION 03/11/2020 The governor of Illinois recently issued a disaster proclamation due to the COVID-19 situation. To protect our attendees’ health and safety, the American Concrete Institute has made the decision to cancel the…