Dear Mr. Salim, thank you for your question. The answer to your question is as follows: If the raw material is large, you need use the jaw crusher to make it small. Then, I advise you choose the impact crusher to make secondary crushing. Because you will use the product to road construction, the requirement of the production grain shape is very high. But, if your material is very hard, you had better choose the cone crusher instead the impact crusher, and you should use a VSI crusher behind the cone crusher to make the grain shape better. Besides, you need other machines, like vibrating feeder, vibrating screen and belt conveyor to consist a whole aggregate production line.

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