Test item 测试名称：Helmets Used for Downhill Mountain Bicycle Racing 山地速降单车头盔
Test info 测试内容
| ASTM F 1952, Standard Specification For Helmets Used for Downhill Mountain Bicycle Racing 山地速降单车头盔标准 |
| 3 Labels and Warnings |
| 6.2 Retention System Testing (roll off) |
| 6.4 static stability of retention system 固定系统的静态稳定性 |
| 7 Peak Acceleration Requirements |
| 8 Chin Bar Rigidity Test 护颚件冲击测试 |
| Impact Energy Attenuation 撞击能量吸收 |
| dynamic strength of retention system 固定系统的动态强度 |
| Field of Vision (ASTM F1446-14) |
| Projection (ASTM F1446-7.2) |
| Lead time 测试周期：7-9 working days 工作日 |
| Sample size 送样规格: 7pcs finished products 七个成品 |
Sample Report 报告样本：
Sample for reference 参考图片: