... MFG 2. Expansive stress 50 Mpa, 3. Top quality but low price 4. safe, soundless and high efficiency ... Granite, marble, sandstone, limestone, quartzite quarrying and cuttingPrecious stone quarryingRocks pre-splitting, fracture, cutting, demolishing and removalConcrete ... of the concrete buildings and structuresRocks cutting for road construction. OEM High Range Soundless Cracking Agent used in Middle ...