18禁超污无遮挡无码免费网站国产,国产真人无遮挡作爱免费视频,欧美色视频在线播放

              
YG8211 safety helmet high temperature pretreatment box:
              About our product：
              
			  It is professionally used for high temperature pretreatment of safety helmets, and is widely used in special labor protection equipment supervision and inspection stations, building science research institutes, construction engineering inspection stations and safety helmet manufacturers.
              
            Previous Product
        
Product details
【Instrument introduction】It is professionally used for high temperature pretreatment of safety helmets, and is widely used in special labor protection equipment supervision and inspection stations, building science research institutes, construction engineering inspection stations and safety helmet manufacturers.
【detailed parameters】●Test temperature: 50℃±2℃
●Time timing range: 0~99.99 hours
●PID automatic temperature controller
●All stainless steel fin heating system
【 meet the standards】GB/T 2812-2006 "Test Methods for Safety Helmets", GB/T 2811-2007 "Safety Helmets".

                                  Previous

精品少妇人妻av一区二区丨99精产国品一二三产区在线丨精品无码国产一区二区三区51安丨在线播放无码字幕亚洲丨国产成人精品综合久久久久

YG8211 safety helmet high temperature pretreatment box:

About our product：

It is professionally used for high temperature pretreatment of safety helmets, and is widely used in special labor protection equipment supervision and inspection stations, building science research institutes, construction engineering inspection stations and safety helmet manufacturers.