美女脱了内裤打开腿让男人戳,亚洲国产区男人本色在线观看,中文字幕久精品免费视频,久久99热精品免费观看牛牛

×

MB-8558 -IULTCS friction fastness test machine for leather

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list
The machine is made of dry or wet white wool cloth wrapped on the friction hammer, reciprocating friction on the dyed shoe upper or lining leather, and its decolorization degree or damage is observed after the experiment.
ISO-11640、DIN 4843、QB/T 2226、QB/T 2537