... -2016.00-253600R-5126.5-2933.25-3535/65-33R10.00-2018.00-25.Expected Service Life on different ground condition:Magmatic ... Rocks Service LifeGranite Rocks, Quartz Rocks, Porphyritic Rocks ... 300~2,000 hoursGreywacke2,800~4,000 hoursVolcanic Tuff3,000~9,000 hoursLime Rocks5,000~16,000 hoursDolomite, Kaolinite, Travertine, ...