采用强化耐热镜片,耐撞击.具有抗冷性,抗化学性及抗溶解性等特点

It uses special heat endurable eyeglass and can bear strike,It also has the andvantages of anti-hot and anti-cold,anti-meit,and endurable to friction .high steel excellent aluminum alloy material,anique with hight weight and hight intensity

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