Participated in production of R/S-PVC plastic all process , such as PVC materials, machine, molding tooling,technics and quality control. Part-time teacher .

• 参与硬-软PVC塑胶产品的全过程技术工作，如：硬-软PVC配方，成型设备，成型模具，成型工艺和质量控制。兼职教师。