... Tech Support ISO & CE Concrete Block machine, Cement Block Machine, Holow Block Machine (SINOSUN) China Block/Brick Making Machine Manufacturer of Zhengzhou ... resistant.8. This Hollow Brick Machine could produce hollow block, paving block, interlcok block etc. Quality Control (QC): Third ControlISO9001:2000 ... Parts Supply ( all working life) PRODUCTION SAMPLES Hollow Block Machine QFT6-16