YG(B)819D Fabrics downproof tester

(China National Patent: CN202030683817.X CN202011251915.1)

Relevant standards

  • GB/T14272 (China national standard drafting enterprise)
  • etc
Scope of application
It is used to test the performance of various fabrics to prevent down or feathers from leaking through the seams.
?
一级在线视频_人妻少妇看A偷人无码_强姧伦久久久久久久久_三级毛片国产三级毛片 一级在线视频_人妻少妇看A偷人无码_强姧伦久久久久久久久_欧美三级网 一级在线视频_人妻少妇看A偷人无码_强姧伦久久久久久久久_99ee6热久久免费精品6 一级在线视频_人妻少妇看A偷人无码_强姧伦久久久久久久久_亚洲欧美另类天天更新影院 一级在线视频_人妻少妇看A偷人无码_强姧伦久久久久久久久_欧美自拍电影

m.gyyps.cn

m.ok336699.cn

m.baidu700.cn

m.kkaba.cn

m.97260779.cn