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It can be very dangerous when drain cover on road broken or disappear, especially at night. Empty drain holes can lead to terrible accidents and very dangerous to motorcyclist. In order to prevent this kind of accidents, we added LED signal lights around the drain hole. When the drain cover is broken or disappear, these red LED lights will be turned on to signal and inform road users. When the LED lights is turned on, it will directly inform the related units to fix it.
Chin Wen Kow,