This study considers a scheduling problem for a flow shop with urgent jobs and limited waiting times. The urgent jobs and limited waiting times are major considerations for scheduling in semiconductor manufacturing systems. The objective function is to minimize a weighted sum of total tardiness of urgent jobs and the makespan of normal jobs. https://www.diegojavierfares.com/top-offer-Spoon-Sports-Thermostat-K-series-RSX-EP3-great-offer/