Where are the most mask factories in Xuzhou?

Fengxian county. According to the records of Xuzhou Dibao, Fengxian County in Xuzhou has the largest number of mask factories, which was called Pengcheng in ancient times. It is a prefecture-level city and sub-central city under the jurisdiction of Jiangsu Province. It is a national historical and cultural city approved by the State Council, a national comprehensive transportation hub and a central city of Huaihai Economic Zone.