Ball mill is to buy new or second-hand ball mill?

Ball mill is to buy new or second-hand ball mill, it is a problem, as for the problem of the decision in your hands. 
Support new reason of ball mill is given: 
Second-hand easy problems, also not much cheaper prices, is not as good as new crusher. New crusher than second-hand crusher has the following advantages: 
Structure is introduced: the roller crusher in tightly rolled under the action of centrifugal force in grinding ring, so when the grinding roller and grinding ring to certain thickness is not the impact of the finished product yield and fineness. Visible rollers and rings replacement cycle is long, which kicked off the centrifugal mill parts replacement cycle short. 
Crusher structure by the host, analysis machine, fan, cyclone separator and finishing products, powder of cyclone separator and duct. Among them, the host by frame, into the wind volute, the shovel, grinding roller and grinding ring, cover and the motor. 
Support of second-hand ball mill is given the strongest reason of choose and buy, the price is cheap. 
Whether new or second-hand ball mill, the choose and buy you make up your mind? 
If it is the beginning and occupy the limitation of second-hand ball mill is not second choice. If flush with cash, a new ball mill have sufficient follow-up service guarantee and advantages. The author suggested that if the choose and buy according to their own actual situation to choose. 
Two arguments as well as a focal point, is think of second-hand ball mill no quality assurance. Second-hand ball mill really there is no quality assurance? Just you are familiar with the so-called second-hand equipment is used in equipment, but as long as used to second-hand equipment, even for a day. Second hand equipment of choose and buy is looking for a reputable companies, the field trip. Or find a knowledgeable person look at the machine, I believe you can worry about should have compensation principle. As for the final option, or in your hand, you consider good?