羞羞漫画在线免费阅读_巨大乳bbwsex日本_美艳yin荡老师好紧_她在丈夫的面前被耍了

×

YG815D-III flame-retardant tester of fabric (More than 45° method)

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list
It is used to determine the damage area and damage length of the textile material under 45° and the number of contact flames when the textiles are heated to the specified length in the state of 45°.
GB/T14644 and so on.