The supply of bulk hydrogen trailers and HCl cylinders were heavily reviewed. Water mist system was implemented to mitigate the dispersion of HCl in gas yard.  The safety and effectiveness of ammonia-nitrogen abatement system for semiconductor fab was also reviewed. 3-D flow pattern simulation, personnel escape simulation, smoke control, maximum foreseeable fire lose assessment, process safety assessment, super-sonic leak detection and infrared thermo-image were commonly utilized in the projects. SEMI S2 certification of process tools and abatement efficiency verification of local scrubbers were delivered. Seismic vibration force minimization and anchor strengthen service was also provided for tools in clean room.