久久精品国产久精国产爱桃色_亚洲精品久黄无码国产a一级毛片区二三_韩国r电影在线观看_人妻被快递员白玩一下午_国产三级成人av_精品一区二区激情在线观看_全免费a级毛片免费看不卡_精品老师爆乳无码av无码专区_国产精品第一页桃色_谁有国产黄色网站

Summary:In 2017, the net source technology product “PTFE hollow fiber curtain film” passed the identification of Ningbo industrial new product, and the appraisal conclusion was “the product performance and process technology filled the domestic blank, reached the international advanced and domestic leading level”, and was finally awarded as 2017. Second Prize of Ningbo Excellent Industrial New Product.