上课把女同桌内裤摸湿,一线高清视频在线观看www国产,色综合伊人色综合网站下载,男人边吃奶摸下边免费视频,精品综合久久久久久蜜月

It is used for static testing of elastic fabric's tensile recovery performance. It adopts aviation aluminum frame design, stainless steel fixture, stainless steel 304 weight, compact structure and stable performance. It...

Used for static testing of elastic fabric's tensile recovery performance. It adopts aviation aluminum frame design, 304 stainless steel fixtures and weights, imported high-quality guide rails, compact structure and stab...

Used for static testing of static elongation and permanent elongation properties of fabrics, films, artificial leather and insulating materials under a certain elongation adjustment. This machine is designed in accordan...

This machine is mainly used to test the elongation and deformation rate of stretchable yarn (chemical fiber stretchable loose yarn, spandex yarn) or textile fabric made of stretchable yarn under fixed load conditions.

YG021B Seam Fatigue Strength Tester (Amsila Fatigue Tester) is used to test the seam strength of the materials used on the surface of the car seat.

This machine is manufactured in accordance with ASTM D4033-92 "Standard Test Method for Resistance to Yarn Slippage of Furniture Upholstery Fabric Joints" (Dynamic Fatigue Test Method). It is used to s...