... 0.075 2.20GP:4450SETS 3.Certification:CIQ & SGS Heat-resistant opal glass coffee cup set 12pcs Detail Description--1 ... high temperature melting,cooling aolidfying,formes amorphous mineral,the heat resistance temperatue is 120degree.2)Melted by 1500degree high- ... temperatue,the pyrex glass is bright,stable,nontoxic,flavourless,ageing resistance.3)Good microwave transmission,which ...