Everything tagged: old bottles

Went on a hike through Nga Chou Hang Squatter Village to a nearby hill with a friend yesterday. There were people doing "hill cleaning". One of the garbage bags accidentally tripped me over and we heard glass bottle clinking sound. That was the moment we realized those people were dumping all of the old bottles in the nearby area. My friend got triggered immediately and I asked for the permission to search through the unsealed bags.

Hello,

Looking for information about these two bottles. 

I pressume the dairy farm glass bottle is for milk, but not the same shape as other known milk bottles.  Found on the peak.  Any ideas of what it was used for and / or date?