Perform quality control for Coex products .
负责工业卷材类产品的质量控制。
The other stamp shows the Seoul 's World Trade Center tower , which is in the Coex complex on the city 's south side .
另一枚显示的是首尔的世贸中心大楼，该楼位于首尔市南面Coex综合设施内。
coex