Hellow guys, Welcome to my website, and you are watching TW-257B Dynamic Strength Tester-2m/s Tester -ISO 8124-1 5.27, 5.24.4, EN71-1 8.22.3 dynamic strength. and this vIdeo is uploaded by Dongguan Hust Tony Instruments Co.,Ltd at 2020-12-17T23:44:15-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
