Zenith Stone Crusher in Angola Zenith Stone Crusher in Angola. Case Study. A Crushing Plant invested by Chinese Government aims to crush Granite Stones for road construction. The detailed requirements are as following: Raw material: Granite. Feeding Size: 800mm Output size: 0-5mm, 5-20mm, 20-40mm. Procuction Process. The raw materials are unloaded by trucks into the hopper.