Welcome to Hunan Yongsheng New Materials Co, Ltd.!
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Company Dynamics
0731-22896500
The company accepted the intellectual property system certification on December 3,2021.The purpose is to effectively control all documents related to the intellectual property management system,prevent all places where the intellectual property management system operates from using invalid versions of documents,ensure that all documents related to the intellectual property management system are under control and ensure the effective operation of the intellectual property management system.