Bluetooth solar pavement marker for car park
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Bluetooth solar pavement marker for car park

There are two types of cast aluminum and cast aluminum shells. All-cast aluminum means that the shell is made of metal and has a relatively high compressive strength. It is generally used at the double yellow line and is generally called all-aluminum road studs. Cast aluminum shell means that the shell is cast aluminum and the interior is filled. The cost of such a road stud is lower than that of full cast aluminum, but at the same time the compressive strength is not so high. It is generally called cast aluminum road stud or cast aluminum filled road stud.

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