... , Aggregate 2. Usage: Hollow Block, Paving Brick 3. Tech Support ISO & CE Concrete Block machine, Cement Block Machine, Holow Block Machine (SINOSUN) China Block/Brick Making Machine Manufacturer ... advanced heat treatment, is wear resistant.8. This Hollow Brick Machine could produce hollow block, paving block, interlcok block etc. Quality Control (QC): Third ControlISO9001:2000 ...