... is under 320Mpa, that is, suitable for primary crush. Jaw crushers can be used in mining, metallurgical industry, construction, ... building, water conservancy, chemistry, etc.Features of Double Jaw Crusher:1. High Producitivity, Reliable Performance, Easy Maintenance.2 ... .5 Zhengzhou Shuangying(Win-Win) Machinery Company mainly products jaw crusher, impact crusher, stone crusher, coal crusher, cone ...