The results showed for ultraviolet ray protection daiflon coating was the best, anti - aging film was better and the resinrich protective coating was the worst.
结果表明，聚三氟乙烯涂层对紫外线的防护效果最好，防老化薄膜次之，富树脂保护层最差。
2
Relying upon the rich salt resource of Yexian, in the project, caustic soda can be mined on the spot to produce ion film caustic soda and PVC resin, which can reduce greatly the production cost.
本项目利用叶县丰富的岩盐资源，就地采卤，生产离子膜烧碱和PVC树脂，可大大降低生产成本。
3
Based on the rich PVC resin resource, the project enjoys advantageous conditions and large potential.