隔音效果好的材料 - 鸿海伟业生活资讯网

声明：Sun Xinwei, deputy general manager of China State Construction Engineering Corp Central and Western African Region, advised that Chinese companies engaging in any large infrastructure projects in Congo should be aware of expenses for the period after the project is completed and before the official operation, as the Congolese government is suffering from an economic downturn due to oil price drop from 2014, which results in delayed payment