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Guardrail blocker is connected between W Beam guadrail and guardrail post ;W Beam Guardrail refers to a system to keep people or vehicles from straying into dangerous in most cases. When the vehicle comes into a crash, due to the good collision resistance and energy absorption of the w beam guardrails,the guardrail will not easily，be distorted, and also the vehicle and passengers won’t be heavily hurt.
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