久久国内外免费视频_日本黄三级视频_一本大道在线观看无码一区_8050网午夜一级毛片

×

YG815D-IV flame-retardant tester of fabric (Less than 45°)

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/T14645