久久婷婷五月综合97色直播|久久人做人爽一区二区三区免费版|免费无码一区二区三区a片百度|成人免费无码大片a毛片软件|欧美日韩人妻精品一区二区三区

     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