Hello Zhu. According to the query of relevant information, Zhu's casserole is the best among Yingjing casserole maker Ren and Zhu's. Zhu's casserole is the most authentic, well-known, with fine sand and good shape. Yingjing casserole generally refers to Yingjing casserole, Yingjing casserole, a specialty of Yingjing County, Sichuan Province, and a national geographical indication product of China. Yingjing casserole has a firing history of more than 2,000 years and is as famous as the purple clay of Yixing, Jiangsu.