When the face protection is not required, the face mask can be pushed on a helmet casing or taken off. The application is simple and convenient.
当不需面部防护时，只需将面罩推至安全帽的帽壳上，或者取下，应用十分简单方便。
When the face protection is not required, the face mask can be pushed on a helmet casing or taken off. The application is simple and convenient.
当不需面部防护时，只需将面罩推至安全帽的帽壳上，或者取下，应用十分简单方便。
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