The inspection equipment including : CE-Meter : Analysis composition of molten iron C & Si before pouring. Spectrometer : Analysis composition of iron , including C Si Mn P S V Cr Cu Metallograph : Inspection the microstructure inoculation & nodularity status Harness Tester : Examine the hardness of casting surface. Tensioner : Test the strength of casting. including tension, bending strength , pressure strength. Sand Tester : Inspection the sand quality. including moisture , ventilation and mold strength.