| 摘要 |
PURPOSE: A plastic hollow type reflective panel for a road sign plate and an optical guidance plate is provided to give information to drivers from both ways and to improve the appearance of a sign plate. CONSTITUTION: The plastic hollow type reflective panel(A) for a road sign plate and an optical guidance plate is formed by arranging patterned reflective sheeting(6) on the surface of a plastic hollow panel(1), and the plastic hollow panel(1) contains front plates(2) and rear plates(3) facing each other, many partition plates(4) and hollows(5).
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