Last week I bought 1 out 3. Today, couldn't resist and decided to buy the entire set (3 types of clays). This is a custom made teapot y2011 by a local teashop which is quite famous for good quality teapots / artist teapots.
The clay is from artist grade raw material, 90s. The studio that produces the teapots is quite famous. Through the teashop connection, they managed to get the senior staff in the studio to make it, so the workmanship and touchup is quite good. Not perfect but for a mass produced teapot, this is consider very good.
The design is from olden days design but slightly modified. The mold for the teapot is custom made by the teashop. Teapots are semi hand made. 30 teapots for each clay.
Even though all 3 are from the same mold, made by the same person in the studio. The end result is slightly different, mostly on the handle and shrinkage.

大茶树记 – 黄金段 – 德钟壶
dà chá shù jì – huáng jīn duàn – dé zhōng hú
140ml
Huang Jin Duan is one of the sub category of Duanni. Less common. Colour is lighter than usual Duanni. It enhances the aroma of the tea, absorption is not that much. Good to bring out the freshness flavor of the tea but for some tea it could increase the bitterness / astringency.
Decided to dedicate for: Raw Pu-erh (01 to 02 years) - Single estate

大茶树记 – 底槽青 – 德钟壶
dà chá shù jì – dǐ cáo qīng – dé zhōng hú
140ml
Di Cao Qing, a more common Zini, but this clay is processed/beaten-up in a better way (I can't remember exactly what they explained). Higher grade. It enhances the smoothness of the tea but lacks aroma compared to Duanni.
Decided to dedicate for: Raw Pu-erh (03 to 14 years)

大茶树记 – 青灰泥 – 德钟壶
dà chá shù jì – qīng huī ní – dé zhōng hú
150ml
Qing Hui Ni is one of the sub category of Zini. Less common. As expensive/rare as modern Zhuni. This retains heat very very well. Brings out the flavor and smoothness. Good to brew aged tea.
Decided to dedicate for: Raw Pu-erh (15 years above)
