1. Hebei area
2. Beijing area
3. Xingzi County in Jiangxi Province mainly produces black slate and green slate, but the price is relatively expensive.
4. The place where Hubei Province and Jiangxi are handed over is also producing black and green products.
5. Shaanxi produces black slate, but the output is relatively low and the freight is high.
6. Shanxi produces purple slate, which is mainly used for tile slabs, and only one factory has very little output.
7. Black, gray and green slate are also produced in Zhuxi, Hubei.
