Impact Energy Attenuation 撞击能量吸收

static stability of retention system 固定系统的静态稳定性

dynamic strength of retention system 固定系统的动态强度

Sample required:  10 pcs per headform size per model with instruction (if applicable) is recommended.

样品要求 :每款每种头形尺寸的头盔各10个,包括说明书(如适用).

Turnaround time: normal (9~12 working days).

所需时间 :标准9~12个工作天).