Earthquake-resistant long life is best for trucks considering exchange frequency and safety. Although it is necessary for several days to be ordered by another company, it is sustained because it is always in stock. Although the initial cost is high, I think that I will never take a break by total cost and safety.
Since genuine products are not earthquake-resistant bulbs, because the vehicles used are dumping, the vibration is much, the light bulbs were easy to break, the light bulbs were easy to break, I thought beforehand whether there was a good method, but the thing called seismic type was found cheaply. This reduces the frequency of replacement, I think that both maintenance time reduction and cost reduction can be done at the same time.