Answer:
An anonymous company, which is producing reagent bottles, kindly answered the question above.
 
 
Since the property of sulfuric acid is not changed by light, we do not have to put sulfuric acid in light resistant bottles.
 
If a reagent has a property which is changed over time by light, we have to put it in light resistant bottles. However, light resistant bottles are not only brown but also white and other colours. So we cannot say “light resistant = brown”
 
Each manufacturer chooses bottles for reagents as their own decision. So there may be manufacturers who use light resistant bottles for sulfuric acid.
 
Our company is using transparent glass bottles for concentrated sulfuric acid (500g, for industrial use), because it is cheaper than light resistant bottles and we can easily determine the amount in the bottle.
 
  
Acknowledgement
We would like to thank an anonymous company for their kind answer.
 

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