国内揄拍国内精品人妻浪潮av-亚洲成年人-一区二区三区在线 | 中国-免费看日韩毛片-亚洲免费精品aⅴ国产-无码免费大香伊蕉在人线国产-最新毛片基地-在线观看你懂得-xxxx国产视频-狠狠躁夜夜躁人人爽天天古典-欧美成人aa大片-国产有码在线观看-久久精品美女视频-国产一区二区视频网站-精品国产sm最大网站

     Provide a full overall project polyamide polymerization technology solutions

     Covering varieties:

     1、PA6 chips

      ※ fiber grade chips:

         civil filament chips, staple fiber grade chips, industrial yarn grade chips

      ※ Resin:

         plastic sections, film grade chips

     2、PA56  chips (bio-based)

     3、PA66  chips