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2021-08-18
It's true that while experts know what type of mills is in front of them just from casually viewing it, less experienced buyers may not know exactly what they're seeing.
Asking about the minimum setting of rock grinding mill will give you the significant information you need about how small the mills can break down material. 
While pricing varies based on whether equipment is new or used, different types of millss will sometimes carry vastly different price tags, as well.
Also on the subject of price, you’ll want to know the maintenance requirements for any mills you're purchasing. Some mills types naturally require more downtime for maintenance than others just based on their construction.