保护措施预防撞击和贯穿是用碳纤维和聚芳族胺，和透过高密度扩大的聚苯乙烯制成的垫塞。
Protection against impacts and perforation is ensured by a shell in carbon fibers and aramid, and by an expanded polystyrene inner padding with high density.
本标准的使用者在使用本标准时，应先制定适当的安全预防措施和健康保护措施，并判断调整具体的限制，这是使用者的责任。
It is the responsibility of user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitation prior to use.
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