Montoya-Reyes MI, Ceballos-Corral J, Mendoza-Muñoz I, Vargas-Bernal OY. Correlation analysis of the life time of coolant used in CNC machines and productivity in the metallic industry of Mexicali. Rev. Ci. Tec. 2022;5(4):e218. doi:10.37636/recit.v5n4e218