... 580*580 3)Siemens motor 4)Efficint JS-580 handheld stone grinder machine Market position: We are manufacturer for medium-to-high ... on floor surface, for renovation,grinding and polishing. We occupied the market because our machine allows highest job efficiency and save ... to the premium raw material it has. Applications:1, For grinding, polishing, renovation, restore, repair, and new floor applying, ...