How long is the applicable period of Zheng Dan chemistry?

A month. It is a description of the job search process. Jiangsu Zheng Dan Chemical Co., Ltd. was incorporated in Zhenjiang Administration for Industry and Commerce on October 23rd, 2007. Legal Representative: Cao Zhengguo. The business scope of the company includes the production of 1 4 diethylbenzene, mixed diethylbenzene and 1 2.