These cups are made of porcelain ,and we also add them lids from silica gel and the ornaments on the body of the cups.
The following are our members attending/to attend this conference and you can contact whomever of them.
英语翻译这杯子是porcelain,我们还加了Silica gel材质的盖子及杯身装饰部分.我们参加这次会议的成员有以下