1) promotional cup coaster 2) 9x9cm, custom size 3) heat resisting 4) home decoration 5) eco-friendly advertising cup coaster / beer mat ... 1997,Shenzhen zhengse Industrail Company is manufacturer specicalizing in producing promotional products,including variety of mouse pad, coaster, placemats,hand ... contacts .coster, beer mat, drink coaster, beer coasters, beer cup mat, mats, promotional coasters