When we walk on the street, we will see rows of neat road guardrails from time to time. So what are the height restrictions of these road guardrails? In the relevant regul ...
Several surface treatment methods are combined and compared, it can be said that the cost of electroplating zinc is relatively low, but accompanied by poor scratch resista ...
There are three main methods for repairing crash barriers: brushed silver powder, hot dip galvanized, and hot dip aluminized. 1. Brush the silver powder. It is not very go ...
Some people think that if the road is not equipped with an isolation barrier, there will be many pedestrians and vehicles crossing the road at will. If the railing is equi ...
At this stage, the safety of the road traffic environment has become an important topic of general concern and concern at all levels of society. Among them, the analysis o ...
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