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

×

MB-7696 safety helmet ultraviolet aging test box

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list
The safety helmet ultraviolet aging box is designed according to the new national standard of safety helmet and used for the pretreatment of ultraviolet radiation before the helmet detection test. It is applied to the pretreatment of safety helmet impact absorption and puncture resistance.
GB/T2811-2007 <Safety helmet>
GB/T2812-2006 <Test method for safety helmet>
1. High quality cold rolling plate electronic control box, high quality stainless steel material experiment box.
2. High precision temperature control instrument.