Excuse me, are you talking about this product? I read it on Taobao. You can find it by directly searching for "Swallow Health Tea House Bamboo Festival" on Taobao. The following are the functions of this product:

Product name: slub glass three-piece set of cups

The material is high borosilicate green glass.

The processing technology is pure hand blowing.

The instantaneous temperature difference is -20℃ to 150℃, and the expansion coefficient is 3.3.

The capacity is about 350ml.

The product consists of an outer cup, a tea filter liner, a cup cover and an outer packaging box.

Specification: diameter of outer cup mouth: 7.9CM, height of cup with lid:11.5cm.

In particular, we only sell genuine products from regular manufacturers. Please don't ask if it's true or not. This product is a pure hand-blown glass product, and the edge of the vessel occasionally has a slight bending point, which belongs to the normal trace of pure hand-blown glass product and is not a quality problem. Please feel free to buy.

Scope of use This product can brew Pu 'er tea, green tea, black tea, herbal tea, fruit tea, oolong tea and other teas, and is a good companion for office and home!