The first countries to make solar road studs active and passive are Japanese and Korean companies. Their requirement for solar road studs is: if solar road studs cannot work due to various reasons, they can also be used to make up for the reflective form of the road studs.
The authentic reflective mold core is electroformed on a needle-shaped electroformed mother board. The precision is very high. After the motherboard has been used several times, it must be removed and re-polished to ensure the reflectance of the reflective mold core. Only a few companies in the world can make this kind of pin-shaped mother board, and some small electroforming remanufacturing factories in China are unable to use pin-shaped mother board for electroforming. This also causes the product that looks like a reflective sheet to actually not reflect light.
Reflector identification method:
Place the solar road stud 10 meters away, hold a small flashlight in your hand, place the flashlight between your eyes, and illuminate the surface of the product to see if it reflects light.