The brands of good quality casseroles include Tefujia, Changshan Zisha, Wangu Casserole, etc.

1. TFJ: This brand of casserole uses purple sand as its raw material. It has a fine texture and good heat preservation performance, and is suitable for home use.

2. Changshan Purple Clay: Changshan Purple Clay Casserole is a traditional handicraft from Changzhou, Jiangsu Province. It is made of Changshan Purple Clay and has excellent quality.

3. Wangu Casserole: Wangu Casserole is a casserole brand with a long history, using traditional hand-made technology and high quality.

4. Tianruitang: The casseroles of this brand are made of high-quality red pottery clay, with exquisite appearance and excellent quality.

5. Shaoxing purple clay: Shaoxing purple clay casserole is made of high-quality purple clay. It has a fine texture and good heat preservation performance. It is suitable for soups and stews.