国产无遮挡又黄又爽在线视频,国产亚洲成AV人片在线观看,伊伊人成亚洲综合人网7777,中文有码vs无码人妻

×

MB-7698 submental strength tester under safety cap

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list
It is specially designed to detect the strength of the submental belt under the safety cap.
《GB/T2811-2007 safety hat》
《GB/T2812-2006 test method for safety helmet》
1. The standard 1# head model, with stable support, is used with the simulated artificial chin.
2. The head die is connected with high precision pressure sensor.
3. LED digital display each stage of the force value.