Replay:I think there are three steps to choose a best crusher:
first of all, you need chosse a good manufacturer, you can search the info by google.com, from there you can find a best manufacturer.
second step is contact the best manufacturer you choose, make sure that the info you have known about the manufacturer is true,
and the third step is to visit the manufacture, and make a contract.
by the way, SBM is a nice manufacture in China, you can know it by click