精品亚洲中文字幕,久久中文日产募无限码婷婷,午夜看片视频在线观看,99亚洲精品无码久久久久

×

MB0540 paint pencil scratch hardness tester

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list

1. The resistance of the surface of the coating to an object with greater hardness on the surface of the coating is to determine the coating film.
2. The ability to resist deformation.
3. It is marked with a pencil mark.
4. It is suitable for the test of coating hardness.

GB/T 6739-1996