... Dutch bricks, solid bricks, hollow blocks and porous blocks for construction. Main Technical SpecificationProduction per Mould8pcs/mould (Standard Hollow Block: ... Weight7 TRaw MaterialsCrushed stone, sand, cement, dust and coal fly ash, cinder, slag, gangue,gravel, perlite, and other industrial wastes.Applied ... be supplied by manufacturer. Automatic Bricks Making Line for industrial construction