First, when choosing a manufacturer, you should carefully examine the strength of the manufacturer, whether it belongs to the manufacturer or a middleman, whether it is a formal enterprise or a small workshop. After determining the strength of the manufacturer, it is best to look at their specific types of highway guardrails and selection precautions, customer usage, and feedback information, so that you can have a better understanding of the manufacturer.

Second, after determining the strength of the manufacturer and the feedback information from customers, it is necessary to further understand the material and craftsmanship of the highway guardrail. The appearance requirements are also very high. During the inspection, you must check the corrosion resistance, acid and alkali resistance, and high temperature resistance of the guardrail. It is best to look at the quality inspection report and honor made by the manufacturer in the quality inspection department. Certificates, etc., so that you can more accurately know the strength of the manufacturer.

Third, the highway guardrail is usually used for a long time after it is installed and used. Therefore, it is necessary to understand the relevant after-sales issues, such as: the warranty time, how long it takes for the after-sales personnel to repair the damage to the highway guardrail, how to agree on returns and exchanges, and so on.