2, Plastic road stud; 3, Ceramic road stud; 4, Glass road stud; 5, Reflective road stud (21 beads and 43 beads, can be combined into the aluminum and plastic road stud) By function: 1, Ordinary road stud; 2, Solar road stud; 3, Tunnel cable road stud; 4, Wireless road stud . By the number of reflective surface: Single-faced road stud and double
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