... .Manufacturer direct sale Heat-resistant glass filter cup is a set of three: cup, filter and lid. Reversed lid can be use as the filter ... the green food inspection.Used for variety tea; green tea, black tea, oolong tea, pu’er tea, craft blooming tea, fruit ... flavor.6.Can be used for variety tea; green tea, black tea, oolong tea, pu’er tea, craft blooming tea, fruit ...