Is this the product you are talking about? I have seen it on Taobao. You can find it by just searching for "Swallow Health Tea House Covered Bowl" on Taobao. The following are the characteristics of this product:
Product Name: Blue and White Hibiscus Covered Bowl
p>Material: Dehua Jade Porcelain
Specifications: Diameter 9.5cm, Capacity 120cc
Features: The thickened mouth is very suitable for brewing Pu'er tea
Introduction to Dehua Jade Porcelain:
Dehua Jade Porcelain" passed the review of the expert group. "Dehua Jade Porcelain" has fine porcelain quality, soft color, smooth glaze and high light transmittance. It is newly developed After testing by the testing department, this porcelain meets the requirements of GB/T3532-1995 daily-use porcelain (national standard). Its transmittance is ≥45%, gloss is ≥85%, whiteness is ≥85°, and lead, The cadmium dissolution is ≤0.02ppm, and the quality reaches the international leading level. It is one of the highest-end daily ceramic products on the market.
It is reported that "Dehua Jade Porcelain" breaks through the traditional ceramic formula. Using bioceramic materials that are compatible with the human body to replace toxic lead, cadmium, barium and other flux ceramic materials in ceramics is more in line with human health needs. This first-of-its-kind new material artificially synthesized from nano-produced ceramics and rare earth materials replaces the original ones. As a natural mineral deposit of ceramic raw materials, it can be fired in the range of 1140℃-1200℃. The energy consumption is 40% lower than that of high-temperature porcelain. The basic material is close to colorless. Multi-color porcelain can be developed in different categories and can be widely used in traditional crafts. Ceramics, Western craft porcelain, daily ceramics, architectural decoration, sanitary ware and other fields.