... FDA E 5high speed,high accuracy Product Description: Stone engraving machines1. Excellent design and well-chosen electric ... protect the tool effectively while processing all kinds of stone. 3. Automatic oil supplier makes the maintenance ... Temperature: 0C—45CRelative humidity: 30%--75%Applicable industryfor Quarried Stone ,artcraft,tombstone,building etc.. Applicable materialtile, marble, granite, ...